Предмет: Математика, автор: dasha20660

какие из указанных чисел являются составными? 1)15 2)17 3)19 4)21 с решением

Ответы

Автор ответа: elena20092

2

1) 15 = 1 · 3 · 5 - составное число

2) 17 = 1 · 17 -простое число

3) 19 = 1 · 19 - простое число

4) 21 = 1 · 3 · 7 - составное число

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