Номер 837, страница 234 - гдз по алгебре 9 класс учебник Солтан, Солтан

Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019

Авторы: Солтан Г. Н., Солтан А. Е., Жумадилова А. Ж.

Тип: Учебник

Издательство: Кокшетау

Год издания: 2019 - 2026

ISBN: 978-601-317-424-2

Рекомендовано Министерством образования и науки Республики Казахстан

V. Элементы теории вероятностей. 31. Первоначальные понятия теории вероятностей. Классическое определение понятия вероятности - номер 837, страница 234.

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                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1104 …2}
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            "task" => array:2 [
              "refs" => "1108585"
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            "text" => "<p><strong>837.</strong> Какова вероятность того, что наугад выбранное целое число от 1 до 30 является делителем числа:<br><strong>а)</strong> $30$;<br><strong>б)</strong> $45$?</p>"
            "img" => array:1 [
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            "edition" => Illuminate\Database\Eloquent\Collection {#1100}
            "task" => array:2 [
              "refs" => "1108585"
              "type" => "task"
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            "text" => "<p><strong>837.</strong> Какова вероятность того, что наугад выбранное целое число от 1 до 30 является делителем числа:<br><strong>а)</strong> $30$;<br><strong>б)</strong> $45$?</p>"
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            "id" => 1554438
            "created_at" => "2026-04-10 13:58:26"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1116
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                    "created_at" => "2026-04-10 13:58:26"
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                    "title" => "Решение 2 (rus)"
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            "task" => array:2 [
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              "type" => "task"
            ]
            "text" => "<p>Для решения задачи используется классическая формула вероятности: $P = m/n$, где $n$ — это общее число всех равновозможных элементарных исходов, а $m$ — число исходов, благоприятствующих событию.</p><p>Общее число исходов $n$ — это количество целых чисел в диапазоне от 1 до 30 включительно. Таким образом, $n = 30$.</p><p><strong>а)</strong> Найдем вероятность того, что наугад выбранное число является делителем числа 30. Событие A — «выбранное число является делителем числа 30». Для начала найдем все делители числа 30. Это числа: 1, 2, 3, 5, 6, 10, 15, 30. Все эти числа находятся в диапазоне от 1 до 30. Следовательно, количество благоприятствующих исходов $m$ равно количеству этих делителей, то есть $m = 8$. Теперь вычислим вероятность события A: $P(A) = m/n = 8/30$. Сократив дробь, получаем: $P(A) = 4/15$.<br>Ответ: $4/15$.</p><p><strong>б)</strong> Найдем вероятность того, что наугад выбранное число является делителем числа 45. Событие B — «выбранное число является делителем числа 45». Найдем все делители числа 45. Это числа: 1, 3, 5, 9, 15, 45. Теперь нам нужно выбрать те из них, которые находятся в диапазоне от 1 до 30. Это числа: 1, 3, 5, 9, 15. Число 45 не входит в наш диапазон. Таким образом, количество благоприятствующих исходов $m$ равно 5. Теперь вычислим вероятность события B: $P(B) = m/n = 5/30$. Сократив дробь, получаем: $P(B) = 1/6$.<br>Ответ: $1/6$.</p>"
          ]
          #original: array:6 [
            "id" => 1554438
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1116}
            "task" => array:2 [
              "refs" => "1108585"
              "type" => "task"
            ]
            "text" => "<p>Для решения задачи используется классическая формула вероятности: $P = m/n$, где $n$ — это общее число всех равновозможных элементарных исходов, а $m$ — число исходов, благоприятствующих событию.</p><p>Общее число исходов $n$ — это количество целых чисел в диапазоне от 1 до 30 включительно. Таким образом, $n = 30$.</p><p><strong>а)</strong> Найдем вероятность того, что наугад выбранное число является делителем числа 30. Событие A — «выбранное число является делителем числа 30». Для начала найдем все делители числа 30. Это числа: 1, 2, 3, 5, 6, 10, 15, 30. Все эти числа находятся в диапазоне от 1 до 30. Следовательно, количество благоприятствующих исходов $m$ равно количеству этих делителей, то есть $m = 8$. Теперь вычислим вероятность события A: $P(A) = m/n = 8/30$. Сократив дробь, получаем: $P(A) = 4/15$.<br>Ответ: $4/15$.</p><p><strong>б)</strong> Найдем вероятность того, что наугад выбранное число является делителем числа 45. Событие B — «выбранное число является делителем числа 45». Найдем все делители числа 45. Это числа: 1, 3, 5, 9, 15, 45. Теперь нам нужно выбрать те из них, которые находятся в диапазоне от 1 до 30. Это числа: 1, 3, 5, 9, 15. Число 45 не входит в наш диапазон. Таким образом, количество благоприятствующих исходов $m$ равно 5. Теперь вычислим вероятность события B: $P(B) = m/n = 5/30$. Сократив дробь, получаем: $P(B) = 1/6$.<br>Ответ: $1/6$.</p>"
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№837 (с. 234)
Условие. №837 (с. 234)
скриншот условия
Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019, страница 234, номер 837, Условие

837. Какова вероятность того, что наугад выбранное целое число от 1 до 30 является делителем числа:
а) $30$;
б) $45$?

Решение. №837 (с. 234)
Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019, страница 234, номер 837, Решение
Решение 2 (rus). №837 (с. 234)

Для решения задачи используется классическая формула вероятности: $P = m/n$, где $n$ — это общее число всех равновозможных элементарных исходов, а $m$ — число исходов, благоприятствующих событию.

Общее число исходов $n$ — это количество целых чисел в диапазоне от 1 до 30 включительно. Таким образом, $n = 30$.

а) Найдем вероятность того, что наугад выбранное число является делителем числа 30. Событие A — «выбранное число является делителем числа 30». Для начала найдем все делители числа 30. Это числа: 1, 2, 3, 5, 6, 10, 15, 30. Все эти числа находятся в диапазоне от 1 до 30. Следовательно, количество благоприятствующих исходов $m$ равно количеству этих делителей, то есть $m = 8$. Теперь вычислим вероятность события A: $P(A) = m/n = 8/30$. Сократив дробь, получаем: $P(A) = 4/15$.
Ответ: $4/15$.

б) Найдем вероятность того, что наугад выбранное число является делителем числа 45. Событие B — «выбранное число является делителем числа 45». Найдем все делители числа 45. Это числа: 1, 3, 5, 9, 15, 45. Теперь нам нужно выбрать те из них, которые находятся в диапазоне от 1 до 30. Это числа: 1, 3, 5, 9, 15. Число 45 не входит в наш диапазон. Таким образом, количество благоприятствующих исходов $m$ равно 5. Теперь вычислим вероятность события B: $P(B) = m/n = 5/30$. Сократив дробь, получаем: $P(B) = 1/6$.
Ответ: $1/6$.

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