[計量] pp1-DS-Q142
看板GMAT (GMAT入學考試)作者LoveDior (努力跟收穫不成正比...)時間17年前 (2009/03/04 16:29)推噓1(1推 0噓 4→)留言5則, 2人參與討論串1/2 (看更多)
If x is a positive integer, what is the least common multiple of x, 6, and 9 ?
(1) The least common multiple of x and 6 is 30.
(2) The least common multiple of x and 9 is 45.
題目是要問 [X,6,9] 這三個數的最小公倍數對嗎?
答案是D
詳解是打 30=6*5
45=9*5
可是我看不懂它的概念~可以幫我解說一下嗎? 感謝~~~
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