标题:
One Math
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作者:
primefang
时间:
2002-8-4 13:24
标题:
One Math
2. 2^X*3^Y*7^Z 的factors 中有168和441, 求: least possible value of XYZ?
1) 9 2) 6 3) 10 5) 12
答案: 12
According to my calculatin, 12 is the most possible answer.Why it is the least??
作者:
tongxun
时间:
2002-8-4 13:35
168=8*3*7;441=9*49,不会写次方,见晾!因此,X最小为3,Y最小为2,Z最小为2;
2*2*3=12
作者:
primefang
时间:
2002-8-5 12:47
oh, 我把least 理解成,最不可能的了,..........
作者:
xiaochaochao
时间:
2002-8-5 15:30
The Idea Is Exactly Right.
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