Предмет: Алгебра, автор: oleg70

какая вероятность того, что произвольно выбраное двоцифровое натуральное число кратное 4?

Ответы

Автор ответа: dtnth

Решение: первое двузначное число 10, последннее 99,

первое двузначное кратное 4 - 12, последнее - 96

количевство всех двузначных чисел

(99-10)1+1=90

количевство двузначных чисел, кратынх 4

(96-12)4+1=22

вероятность равна 2290=1145

Ответ: 1145

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