1. For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive. If P is the smallest prime factor of h(100)+1, then p is..........
(1)10~20 (4)30~40 (5)40以上 答案:5
2. Ifxy=1, what is value of [2(X+Y)^2]/[2(X-Y)^2]
(1)2 (4)4 (5)16 答案:(5)
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