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标题: One math question from GMATPrep [打印本页]

作者: boston8899 时间: 2008-1-7 22:19
标题: One math question from GMATPrep

n! is a multiple of 990, what is the least possible value of n?

Is there anyone who could help with it? Many thanks.

作者: 54yyer 时间: 2008-1-7 22:27

分解质因数出：2 3 3 5 11

所以至少要有11才行，n最少11

[此贴子已经被作者于2008-1-7 22:26:58编辑过]

作者: boston8899 时间: 2008-1-8 06:22
thanks! I didn't quite understand it when I did it. Gotta read it a couple of more times.

作者: boston8899 时间: 2008-1-8 06:26
I thought here, "least" == "last". anyway, thanks again.

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