All the positive integers less than 49 are multiplied togeth

问题描述:

All the positive integers less than 49 are multiplied together.How many zeros will this product end in?
1个回答 分类:英语 2014-10-06

问题解答:

我来补答
9个.(nine)
再问: 有木有过程啊?
再答: = =算错了,10个。。。 寻找带5和0的数就有5,10,15,20,25,30,35,40,45共9个数,但25很特殊,可以分解为5x5,可以当做两个5用,(帮你理例4x25=100,出现了两个0),所以一共会出现10个0。
 
 
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