Предмет: Математика, автор: Nik31579

В ящике лежат 20 шариков, 12 из которых черные. Какова вероятность вытащить наугад: а) черный шарик? б) три черных шарика за один раз?

Ответы

Автор ответа: mmoaoaotorch

Пошаговое объяснение:

всего 20 шариков, из них 12 чёрных

а) 12/20 = 0,6 вероятность того, что выпадет черный шарик

б) 3/12 = 0,25 вероятность того, что выпадет три черных шарика за раз

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