百度作业网真题When the positive integer S is divided by 12,the remainder
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真题
When the positive integer S is divided by 12,the remainder is 4.When the positive integer T is divided by 12,the remainder is 5.What is the remainder when the product ST is divided by
为什么这题的答案是2,而我选的是1,
When the positive integer S is divided by 12,the remainder is 4.When the positive integer T is divided by 12,the remainder is 5.What is the remainder when the product ST is divided by
为什么这题的答案是2,而我选的是1,
S除以12余数是4,那么16是符合条件的S,T除以12,余数是5,那么17是符合条件的一个T.
那么S乘以T就是16乘以17,=272.272除以6的话余数是2,也就得出了正确答案.
你选错的话可能是没有读懂题目的意思.
再问： 我也是选的16和17相乘，除以6，16和6可以约去2，然后就不对了，为什么呢?
再答： 因为余数在计算过程中也被除以了2
那么S乘以T就是16乘以17,=272.272除以6的话余数是2,也就得出了正确答案.
你选错的话可能是没有读懂题目的意思.
再问： 我也是选的16和17相乘，除以6，16和6可以约去2，然后就不对了，为什么呢?
再答： 因为余数在计算过程中也被除以了2
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