是l have been there 还是l have to there200以内,同时只含有素因数2.、3、7的合数有几个A.2个 B、3个 C、4个 D、5个与分数30分之12相等,且分母小于30的分数是不是有2个?
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是l have been there 还是l have to there
200以内,同时只含有素因数2.、3、7的合数有几个
A.2个 B、3个 C、4个 D、5个
与分数30分之12相等,且分母小于30的分数是不是有2个?
I have been there
我已经去过那里了.
有42 84 126 168
选C,共4个.
所谓只含有素因数2,3,7,意思是除了2,3,7之外,其他的因数都是合数,或者没有其他的因数.
C
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have been there 中文翻译
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