Вопрос школьника по предмету Алгебра
У 9-А класі навчаються 20 учнів, 25 % з яких — відмінники. Доводити теорему синусів навмання викликають одного учня. Яка ймовірність того, що це буде відмінник
Ответ учителя по предмету Алгебра
Ответ:
20/100*25=5
5/15=1/3
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I’m optimistic about the future!
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