请教一道DS整除题~

konglxd

if a, m and n are positive integers, is n^2a a multiple of m^a?

(1) n is a multiple of m/2
(2) n is a multiple of 2m




答案是B
求指导~感激不尽~

zdytiffany

If n is a multiple of 2m, n must be a multiple of m. Therefore, n^a is a multiple of m^a. Of course, (n^a)^2 is a multiple of m^a.

konglxd

自己琢磨了下明白了~THX~