Marsh Bright
07/24/2024 · Junior High School
Вероятность того, что новая шариковая ручка пишет плохо (или не пишет), равна 0,11 . Покупатель в магазине выбирает одну шариковую ручку. Найдите вероятность того, что эта ручка пишет хорошо.
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Вероятность, что ручка пишет хорошо, равна 0,89.
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