Номер 15, страница 143, часть 2 - гдз по алгебре 10 класс учебник Пак, Ардакулы

Авторы: Пак О. В., Ардакулы Д., Ескендирова Е. В.

Тип: Учебник

Издательство: Алматыкітап баспасы

Год издания: 2019 - 2026

Часть: 2

ISBN: 978-601-01-3958-9

Рекомендовано Министерством образования и науки Республики Казахстан

Часть 2. Глава 7. Случайные величины и их характеристики. Параграф 3. Числовые характеристики дискретных случайных величин. Задачи - номер 15, страница 143.

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                        0 => App\Models\Term {#1123
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                        1 => App\Models\Term {#1128
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                        2 => App\Models\Term {#1129
                          #connection: "mysql"
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                          #primaryKey: "id"
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                        0 => App\Models\Term {#1134
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                    "field_class" => Illuminate\Database\Eloquent\Collection {#1122}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1124}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1126}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1130}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1131}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1133}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1135}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1137}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1138}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1139}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1140}
                    "field_publication_number" => null
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1141}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1142}
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => null
                    "field_publication_year" => "2019"
                    "field_publication_year_until" => null
                    "field_part" => "1, 2"
                    "field_part_writing" => "Часть"
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для учащихся 10 класса общеобразовательной школы общественно-гуманитарного направления"
                    "field_allowed" => "Рекомендовано Министерством образования и науки Республики Казахстан"
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "1063"
                    "field_priority" => "6"
                    "field_default_folder" => "/algebra_10/baspasy-u19/"
                    "field_isbn" => "978-601-01-3958-9"
                    "field_cover" => array:1 [
                      0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                        "alt" => ""
                        "width" => "1940"
                        "height" => "2895"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1143}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1144}
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1145}
                    "field_url" => "/10-klass/algebra/baspasy-pak-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1146}
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 542
                      "class_subject" => 387
                    ]
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1147
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119426
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => null
            "field_branch_order" => "2"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1120}
            "field_page_start" => "5"
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            "book" => Illuminate\Database\Eloquent\Collection {#1149}
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          #attributeCastCache: []
          #dateFormat: null
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            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1148
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1119455
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Случайные величины и их характеристики"
            "field_branch_order" => "7"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1153
              #items: array:1 [
                0 => App\Models\Term {#1150
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_cases" => array:6 [
                      "field_accusative_case" => "Главу"
                      "field_creative_case" => "Главой"
                      "field_dative_case" => "Главе"
                      "field_genitive_case" => "Главы"
                      "field_nominative_case" => "Глава"
                      "field_prepositional_case" => "Главе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => null
                  ]
                  #original: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Глава"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "Главу"
                      "field_creative_case" => "Главой"
                      "field_dative_case" => "Главе"
                      "field_genitive_case" => "Главы"
                      "field_nominative_case" => "Глава"
                      "field_prepositional_case" => "Главе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => null
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
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                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "130"
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            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1152
              #items: array:1 [
                0 => App\Models\Book {#1119}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1151
              #items: array:1 [
                0 => App\Models\Branch {#1034}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119455
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Случайные величины и их характеристики"
            "field_branch_order" => "7"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1153}
            "field_page_start" => "130"
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            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1152}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1151}
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
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          #hidden: []
          #visible: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Branch {#1154
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
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          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1120521
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1158
              #items: array:1 [
                0 => App\Models\Term {#1155
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "Параграф"
                      "field_creative_case" => "Параграфом"
                      "field_dative_case" => "Параграфу"
                      "field_genitive_case" => "Параграфа"
                      "field_nominative_case" => "Параграф"
                      "field_prepositional_case" => "Параграфе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "Параграф"
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                      "field_dative_case" => "Параграфу"
                      "field_genitive_case" => "Параграфа"
                      "field_nominative_case" => "Параграф"
                      "field_prepositional_case" => "Параграфе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #visible: []
                  #fillable: []
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "134"
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                0 => App\Models\Book {#1119}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1166
              #items: array:1 [
                0 => App\Models\Branch {#1165
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1119455
                    "created_at" => "2026-04-10 13:58:26"
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                    "field_branch_order" => "7"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1167
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "field_page_start" => "130"
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                    "book" => Illuminate\Database\Eloquent\Collection {#1168
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                      #escapeWhenCastingToString: false
                    }
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1169
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                      #escapeWhenCastingToString: false
                    }
                  ]
                  #original: array:24 [
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                    "created_at" => "2026-04-10 13:58:26"
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                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1167}
                    "field_page_start" => "130"
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                    "book" => Illuminate\Database\Eloquent\Collection {#1168}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1169}
                  ]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
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                  #visible: []
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                    0 => "*"
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                }
              ]
              #escapeWhenCastingToString: false
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          ]
          #original: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Числовые характеристики дискретных случайных величин"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1158}
            "field_page_start" => "134"
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            "field_display_branch_in_title" => "1"
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            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1157}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1166}
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          #attributeCastCache: []
          #dateFormat: null
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        3 => App\Models\Branch {#1159
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1120522
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Задачи"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1156
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "135"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
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            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
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            "field_h1" => null
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            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1162
              #items: array:1 [
                0 => App\Models\Book {#1119}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1175
              #items: array:1 [
                0 => App\Models\Branch {#1174
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1120521
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Числовые характеристики дискретных случайных величин"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1176
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "field_page_start" => "134"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
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                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
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                    "field_h1" => null
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                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1177
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1178
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                  ]
                  #original: array:24 [
                    "id" => 1120521
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Числовые характеристики дискретных случайных величин"
                    "field_branch_order" => "3"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1176}
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            "text" => "<p><strong>15.</strong> В следующей последовательности К обозначает красный, Ж – желтый, З – зеленый, Г – голубой, Б – белый цвета.</p><p>Если продолжить последовательность, то какой цвет будет следующим?</p><p>Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б</p>"
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            "text" => "<p>Для решения задачи необходимо найти закономерность в представленной последовательности букв и определить, какая буква будет следующей.</p><p>В условии даны следующие обозначения цветов:</p><ul><li><strong>К</strong>: красный</li><li><strong>Ж</strong>: желтый</li><li><strong>З</strong>: зеленый</li><li><strong>Г</strong>: голубой</li><li><strong>Б</strong>: белый</li></ul><p>Анализируемая последовательность:</p><p><code>Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б</code></p><p><strong>1. Поиск закономерности</strong></p><p>Для нахождения следующего элемента последовательности необходимо выявить лежащий в ее основе принцип. Можно рассмотреть несколько гипотез.</p><p>Одна из возможных гипотез заключается в том, что последовательность строится из последовательно удлиняющихся блоков. Например:</p><ul><li>$P_0 = Г$</li><li>$P_1 = ГК$</li><li>$P_2 = ГКБ$</li><li>$P_3 = ГКБЗ$</li><li>$P_4 = ГКБЗЖ$</li></ul><p>Если объединить эти блоки, получится последовательность: $P_0 P_1 P_2 P_3 P_4 = Г ГК ГКБ ГКБЗ ГКБЗЖ$. Результат <code>ГГКГКБГКБЗГКБЗЖ</code> в точности совпадает с первыми 15 символами исходной последовательности. Однако эта закономерность не объясняет оставшуюся часть последовательности (<code>Г К Г К Б Г К Б</code>) и, следовательно, не может считаться верной для всей последовательности.</p><p>Другие сложные структурные или рекурсивные закономерности также не удается последовательно применить ко всей строке.</p><p><strong>2. Анализ длины последовательности</strong></p><p>Рассмотрим самую простую возможную закономерность — цикличность. Для этого посчитаем количество символов в данной последовательности:</p><p><code>Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б</code></p><p>Всего в последовательности 23 символа. Число 23 является простым числом (делится без остатка только на 1 и на само себя).</p><p>Если последовательность является циклической (периодической), то ее период (длина повторяющегося блока) должен быть делителем общей длины наблюдаемого отрезка. Поскольку длина равна 23, то возможная длина периода — либо 1 (что очевидно неверно, так как символы разные), либо 23.</p><p>Таким образом, наиболее вероятная гипотеза состоит в том, что вся приведенная последовательность представляет собой один полный период (цикл). Если это так, то после последнего символа последовательность начнется заново с первого символа.</p><p><strong>3. Определение следующего цвета</strong></p><p>Исходная последовательность является периодом $P = Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б$.</p><p>Полная бесконечная последовательность имеет вид $P, P, P, \dots$</p><p>Следовательно, символ, следующий за последним символом `Б`, будет первым символом периода $P$.</p><p>Первый символ последовательности — это буква `Г`.</p><p>Согласно условию, буква `Г` обозначает голубой цвет.</p><p><strong>Ответ:</strong> Следующим в последовательности будет голубой цвет (Г).</p>"
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            "text" => "<p>Для решения задачи необходимо найти закономерность в представленной последовательности букв и определить, какая буква будет следующей.</p><p>В условии даны следующие обозначения цветов:</p><ul><li><strong>К</strong>: красный</li><li><strong>Ж</strong>: желтый</li><li><strong>З</strong>: зеленый</li><li><strong>Г</strong>: голубой</li><li><strong>Б</strong>: белый</li></ul><p>Анализируемая последовательность:</p><p><code>Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б</code></p><p><strong>1. Поиск закономерности</strong></p><p>Для нахождения следующего элемента последовательности необходимо выявить лежащий в ее основе принцип. Можно рассмотреть несколько гипотез.</p><p>Одна из возможных гипотез заключается в том, что последовательность строится из последовательно удлиняющихся блоков. Например:</p><ul><li>$P_0 = Г$</li><li>$P_1 = ГК$</li><li>$P_2 = ГКБ$</li><li>$P_3 = ГКБЗ$</li><li>$P_4 = ГКБЗЖ$</li></ul><p>Если объединить эти блоки, получится последовательность: $P_0 P_1 P_2 P_3 P_4 = Г ГК ГКБ ГКБЗ ГКБЗЖ$. Результат <code>ГГКГКБГКБЗГКБЗЖ</code> в точности совпадает с первыми 15 символами исходной последовательности. Однако эта закономерность не объясняет оставшуюся часть последовательности (<code>Г К Г К Б Г К Б</code>) и, следовательно, не может считаться верной для всей последовательности.</p><p>Другие сложные структурные или рекурсивные закономерности также не удается последовательно применить ко всей строке.</p><p><strong>2. Анализ длины последовательности</strong></p><p>Рассмотрим самую простую возможную закономерность — цикличность. Для этого посчитаем количество символов в данной последовательности:</p><p><code>Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б</code></p><p>Всего в последовательности 23 символа. Число 23 является простым числом (делится без остатка только на 1 и на само себя).</p><p>Если последовательность является циклической (периодической), то ее период (длина повторяющегося блока) должен быть делителем общей длины наблюдаемого отрезка. Поскольку длина равна 23, то возможная длина периода — либо 1 (что очевидно неверно, так как символы разные), либо 23.</p><p>Таким образом, наиболее вероятная гипотеза состоит в том, что вся приведенная последовательность представляет собой один полный период (цикл). Если это так, то после последнего символа последовательность начнется заново с первого символа.</p><p><strong>3. Определение следующего цвета</strong></p><p>Исходная последовательность является периодом $P = Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б$.</p><p>Полная бесконечная последовательность имеет вид $P, P, P, \dots$</p><p>Следовательно, символ, следующий за последним символом `Б`, будет первым символом периода $P$.</p><p>Первый символ последовательности — это буква `Г`.</p><p>Согласно условию, буква `Г` обозначает голубой цвет.</p><p><strong>Ответ:</strong> Следующим в последовательности будет голубой цвет (Г).</p>"
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    "book" => Illuminate\Database\Eloquent\Collection {#1100
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№15 (с. 143)
Условие. №15 (с. 143)
скриншот условия
Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019, Часть 2, страница 143, номер 15, Условие

15. В следующей последовательности К обозначает красный, Ж – желтый, З – зеленый, Г – голубой, Б – белый цвета.

Если продолжить последовательность, то какой цвет будет следующим?

Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б

Решение 2 (rus). №15 (с. 143)

Для решения задачи необходимо найти закономерность в представленной последовательности букв и определить, какая буква будет следующей.

В условии даны следующие обозначения цветов:

  • К: красный
  • Ж: желтый
  • З: зеленый
  • Г: голубой
  • Б: белый

Анализируемая последовательность:

Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б

1. Поиск закономерности

Для нахождения следующего элемента последовательности необходимо выявить лежащий в ее основе принцип. Можно рассмотреть несколько гипотез.

Одна из возможных гипотез заключается в том, что последовательность строится из последовательно удлиняющихся блоков. Например:

  • $P_0 = Г$
  • $P_1 = ГК$
  • $P_2 = ГКБ$
  • $P_3 = ГКБЗ$
  • $P_4 = ГКБЗЖ$

Если объединить эти блоки, получится последовательность: $P_0 P_1 P_2 P_3 P_4 = Г ГК ГКБ ГКБЗ ГКБЗЖ$. Результат ГГКГКБГКБЗГКБЗЖ в точности совпадает с первыми 15 символами исходной последовательности. Однако эта закономерность не объясняет оставшуюся часть последовательности (Г К Г К Б Г К Б) и, следовательно, не может считаться верной для всей последовательности.

Другие сложные структурные или рекурсивные закономерности также не удается последовательно применить ко всей строке.

2. Анализ длины последовательности

Рассмотрим самую простую возможную закономерность — цикличность. Для этого посчитаем количество символов в данной последовательности:

Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б

Всего в последовательности 23 символа. Число 23 является простым числом (делится без остатка только на 1 и на само себя).

Если последовательность является циклической (периодической), то ее период (длина повторяющегося блока) должен быть делителем общей длины наблюдаемого отрезка. Поскольку длина равна 23, то возможная длина периода — либо 1 (что очевидно неверно, так как символы разные), либо 23.

Таким образом, наиболее вероятная гипотеза состоит в том, что вся приведенная последовательность представляет собой один полный период (цикл). Если это так, то после последнего символа последовательность начнется заново с первого символа.

3. Определение следующего цвета

Исходная последовательность является периодом $P = Г Г К Г К Б Г К Б З Г К Б З Ж Г К Г К Б Г К Б$.

Полная бесконечная последовательность имеет вид $P, P, P, \dots$

Следовательно, символ, следующий за последним символом `Б`, будет первым символом периода $P$.

Первый символ последовательности — это буква `Г`.

Согласно условию, буква `Г` обозначает голубой цвет.

Ответ: Следующим в последовательности будет голубой цвет (Г).

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