Problem Solving

试题详情

题目:

If n is a positive integer and the product of all the integers from 1 to n, inclusive, is divisible by 990, what is the least possible value of n ?

选项:

A、8
B、9
C、10
D、11
E、12

答案:

D

提问:

没有思路,这道题怎么解?
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