LCM of 10, 15 and 20 is

LCM of 10, 15 and 20:-

10 = 2× 5

15 = 3× 5

20 = 2× 2× 5

2: 2 occurrences

3: 1 occurrence

5:1 occurrence

LCM = 2× 2× 3× 5 = 60