Jawabanmu

2014-08-25T20:31:29+07:00
Bilangan asli <10 = 1,2,3,4,5,6,7,8,9 
2014-08-25T20:42:44+07:00
Himpunan bilangan asli = M
M = { 1,2,3,4,5,6,7,8,9 }