Предмет: Математика, автор: yulik2002denis

Помогите решить 2 задания для 5 класса.
1. Может ли число 2а+6b? Где a,b - некоторое натуральные числа, быть простым? Почему?
2. Какую цифру можно поставить вместь звёздочки, чтобы число 834* делилось на 2, но не делилось на 4? Рассмотрите все возможные случаи.

Ответы

Автор ответа: Djina5

2) можно подставить 1. тогда на 4 будет делиться с остатком)

Автор ответа: yulik2002denis

тогда на 2 не будет делитсяО_о

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