Jawapan

2016-03-02T10:12:49+08:00
6 = 1, 2, 3, 6

12 = 1, 2, 3, 4, 6, 12

18 = 1, 2, 3, 6, 9, 18

so, the common factor of 6, 12 and 18 are 1, 2, 3, and 6
2016-03-02T16:10:30+08:00
6 = 1 x 6
6 = 2 x 3

common factor 6 is 1,2,3,6

12 = 1 x 12
12 = 2 x 6
12 = 3 x 4

common factor 12 is 1,2,3,4,6,12

18 = 1 x 18
18 = 2 x 9
18 = 3 x 6
 
common factor 18 is 1,2,3,6,9,18
1 5 1
6 =1,2,3,6 12 = 1,2,3,4,6,12 18 =1,2,3,6,9,18 =1,2,3 and 6 kallal
6 =1,2,3,6 12 = 1,2,3,4,6,12 18 =1,2,3,6,9,18 =1,2,3 and 6