标题: 麻烦大家帮忙解答一下这道题，多谢。 [打印本页]

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作者: endless1990    时间: 2011-1-22 21:20     标题: 麻烦大家帮忙解答一下这道题，多谢。

If s and t are positive integers such that s/t=64.12, which of the following could be the remainder when s is divided by t?A.2
B.4
C.8
D.20
E.45

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作者: evenlasting    时间: 2011-1-23 06:57

E

S = 64t + 0.12*t =64t + 3*t/25

So the remainder must have a factor of 3.

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作者: endless1990    时间: 2011-1-23 21:09

懂了，多谢！

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