Предмет: Алгебра, автор: lilxhoneymoon

4. В коробку положили 10 карандашей и 8 ручек. Наудачу достали 4 предмета. Какова вероятность: а) что все четыре предмета окажутся карандашами? б) что все четыре предмета окажутся ручками?

Ответы

Автор ответа: stepanovnagala92

Ответ:

50% ну или же 70% ручек или карандашей

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