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标题: feifei数学一道题看不懂@@ [打印本页]

作者: secretnancy 时间: 2010-8-12 00:25
标题: feifei数学一道题看不懂@@
10、For all x, x is positive integer,"2-height" is defined
to be the greatest nonnegative n of x, what is the
greatest number of 2-height when 2" is the factor of x?
A. 2
B. 12
C. 40
D. 76
E. 90

【答案】C
【思路】：40=2^3 *5,2的幂最多

题目什么意思啊?谢谢谁帮解释一下^^
Thankyou~

作者: BreezyCipher 时间: 2010-8-12 02:05
http://www.chasedream.com/show.aspx?id=94&cid=40

这个帖子把2-height题都归纳了

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