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数学
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1*2*3*4.*2012*2013积的末尾有?个0
.代表*5*6*7*8.
人气:253 ℃ 时间:2020-03-29 17:03:19
解答
n末尾零的个数等于 n = [n/5] + [n/5^2] + [n/5^3] + [n/5^4] + ...,求末尾有多少个0的答案。并且...,还有多少个(n/5*4)
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