Вопрос школьника по предмету Математика
в доме 90квартир, которая распологается по жребию . кокова вероятность того ,что жильцу не достаниться квартира на первом этаже ,если таких квартир 6
Ответ учителя по предмету Математика
90-6=84
84/90=14/15=0.93%
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