Problem Solving
试题详情
题目：
For any integer k greater than 1, the symbol $${k}^ast$$ denotes the product of all the fractions of the form $$frac1 t$$, where t is an integer between 1 and k, inclusive. What is the value of $$frac{{5}^ast} {{4}^ast}$$?
选项:
A、5
B、$$\frac{5}{4}$$
C、$$\frac{4}{5}$$
D、$$\frac{1}{4}$$
E、$$\frac{1}{5}$$
答案:
E
