if n is a multiple of 5 and n=p^2*q, where p and q are prime numbers, which of the following must be a multiple of 25?a p^2 b q^2c pqd p^2*q^2e p^3*q
这道题该怎么入手阿 我完全不会 汗
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分析的太清晰了 我这下可算明白了 谢谢啦
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