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задача на вероятность:
Студент знает 20 из 27 вопросов программы. Найти вероятность того, что студент знает 3 вопроса, предложенные ему экзаменатором.-
Предмет:
Математика -
Автор:
kaiqhro - 6 лет назад
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Ответы 1
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сначала нужно найти вероятность из всех вопросов.нужно разделить сколько знает на то, сколько вопросов всего. 20/27=0,74и разделить 3 вопроса на общую вероятность3/0,74=4,05
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Автор:
marelir6aa - 6 лет назад
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