gwd-7-23

yaojianbin33

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

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

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

5*/4*=1/5