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標題:
[奧林匹克挑戰題]1
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Question:
最佳解答:
Let d be the HCF of a and c then a=dm, c=dn we have b=ca/(a+c)=dmn/(m+n) and d(m-n)=101 So d=101 and m-n=1 Because (m+n)|d So m+n=101 That is m=51 , n=50 b=(101)(51)(50)/(101)=2550
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其他解答:
呢個answer唔係positive integer....... c x c-101c _________ = b 99
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