PP3数学题

armymans

every even integer n
the function of h(n)=product of the even integers from 2 to n inclusive
if p is the smallest prime factor of h(100)+1
p is
(a) between 2-10
(b)between 10-20
(c) bet 20-30
(d)bet 30-40
(e) over 40

himba

1.h(100)=2*4*6*...*100 其最小的质因数为47,则h(100)+1的最小质因数应该>47

列出质数：2,3,5....23,..47,53,

53不合本题，因为最大的100，的最大质因数到47

ANS：E吧

armymans

谢谢版主。