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标题: gwd-7-23 [打印本页]

作者: yaojianbin33 时间: 2006-4-29 12:38 标题: gwd-7-23

For any integer k greater than 1, the symbol k^* denotes the product of all the fractions of the form 1/t, where t is an integer between 1 and k, inclusive. What is the value of 5*/4*?

A. 5

B. 5/4

C. 4/5

D. 1/4

E. 1/5

答案是E.我算出得了C.

作者: leadership 时间: 2006-4-29 20:42

5*=1*1/2*1/3*1/4*1/5

4*=1*1/2*1/3*1/4

5*/4*=1/5

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