yaojianbin33 当前离线
高级会员
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.
leadership 当前离线
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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