请教一道数学prep题目

暗蓝郁

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 samllest prime factor of h(100)+1.then p is?
A between2 to 10
B between 10 to 20
C between 20 to 30
D between 30 to 40
E more than 40

没有思路。

mazhuo_0212

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 samllest prime factor of h(100)+1.then p is?
A between2 to 10
B between 10 to 20
C between 20 to 30
D between 30 to 40
E more than 40

没有思路。

-- by 会员 暗蓝郁 (2010/5/30 9:52:46)

对对对 这道题纠结死我了 怎么也想不明白 请高人指点！！

liangruichao

两个相邻的整数是互质的，按这个思路去做吧

刷牙不起沫

同问