Предмет: Математика, автор: Eneas

Не особо сложный вопрос,но всё же

Учитель истории произвольно выбирает для Степана один год из XX века для домашнего доклада по истории России. Какова вероятность того, что Степану достанется год из истории СССР (с 1922 по 1991)?

Ответы

Автор ответа: Аноним

1 век-100 лет
история ссср=1991-1922+1=70
Значит вероятность равна 7/10, то есть 70% или 0.7

Eneas: Хорошо,спасибо )

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