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标题: 求教一道数学难题 [打印本页]

作者: caiyou1001 时间: 2011-12-17 01:01 标题: 求教一道数学难题

这是一道data sufficiency的题

If n and t are positive integers, what is the greatest
prime factor of the product nt?
(1)The greatest common factor of n and t is 5
(2)The least common multiple of n and t is 105

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