1. Будем считать, что выпадение каждой из 6 граней игрального кубика равновероятно. Общее число возможных исходов при двух бросках 36. Перечислим все возможные исходы, при которых выпадет 6 в виде комбинаций двух цифр, первая из которых указывает сколько выпало при первом броске, а вторая - соответственно при втором броске:
1 и 4;
2 и 4;
3 и 4;
4 и 4;
5 и 4;
6 и 4;
5 и 4;
2 и 4;
3 и 4;
4 и 4;
6 и 4.
Всего 11 вариантов, при которых хотя бы один раз выпала 5.
Следовательно, вероятность выпадения 5 хотя бы при одном броске 11/36.
ответ: 11/36 или ≈ 0,30 (30%)
2.Всего возможных исходов - 70.
Благоприятных исходов: 70-7-5=58
Вероятность - количество благоприятных исходов разделить на общее количество.
То есть, вероятность равна 58/70.
ответ: 58/70 или ≈ 0,83 (83%)
Пошаговое объяснение:
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94*4=376(чел)перевёз за первый день первый автобус
188*6=1128(чел)перевёз второй автобус за день