Answers

2014-08-02T11:28:50+08:00
The LCM of 10,15 and 20 are

10=10,20,30,40,50,60
15=15,30,45,60
20=20,40,60

The LCM is 60

not sure but maybe

since LCM is the smallest numbers factor of..
2 3 2
i don't understand
I think it is 120
2014-08-02T11:31:54+08:00
10- 10,20,30,40,50,60
15-15,30,45,60
20-20,40,60 

LCM-60
1 5 1