18楼: Originally posted by yumoym at 2013-06-16 14:48:42
a=1:100;
=meshgrid(a*10,1:2:9);
d=b+c;
f=a(sum(~isprime(d))==5)

f=
20    32    51    53    62    84    89
这是100以内满足条件的。

2楼: Originally posted by 人民海军 at 2013-06-14 12:15:01
遍历啊，n=1,2,3,4,5,6....