作者catspace (柏拉圖的永恆...)
看板GMAT
標題Re: [計量] GWD-9 Q19
時間Sun Sep 7 15:12:31 2008
※ 引述《chasethesky (堅持!)》之銘言:
: Is the integer n odd?
: (1)n is divisible by 3.
: (2)2n is divisible by twice as many positive integers as n.
: 答案是B
: Statement(2) ALONE is sufficient, but statement (1) alone is not sufficient.
: 其實我是(2)看不懂><
意思是
可以整除2n的數字總數是可以整除n的數字總數的兩倍
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1F:推 chasethesky:謝謝回答 但這樣子我還是不懂答案為什麼是B >< 09/07 15:59
2F:推 chasethesky:想過以後應該懂啦,謝謝^^ 09/07 16:09