Jawabanmu

2014-08-19T17:08:19+07:00
Β∞w is very ≡ important to work

2014-08-19T17:09:11+07:00
A. 30 = 1,2,3,5,6,10,15,30
    60 = 1,2,3,4,5,6,10,12,15,20,30,60

b. ada
    1,2,3,5,6,10,15,30

c. 3