作者spplen (起步向學走)
看板GMAT
標題[計量]pp1-DS-3
時間Sat Feb 2 20:11:23 2008
How many different prime numbers are factors of the positive integer n ?
(1) Four different prime numbers are factors of 2n.
(2) Four different prime numbers are factors of n^2.
ans:B
麻煩大大幫忙解惑~感謝！
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※ 編輯: spplen 來自: 61.57.78.189 (02/02 23:00)