Предмет: Математика, автор: flora72

найдите последнюю цифру числа 1!+2!+3!+....+2015! (nпроизведение всех натуральных чисел от 1 до n)

Ответы

Автор ответа: potapov19461

0

1!=1
2!=2
3!=6
4!=12
5!=60, а дольше все оканчиваются нулями.1+2+6+12=21. Значит на конце в результате будет1.

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