Question

LCM of 10, 15 and 20 is ______.

विकल्प

• 30

• 60

• 90

• 180

Answer 1

LCM of 10, 15 and 20 is 60.

Explanation:

We have,

2	10, 15, 20
2	5, 15, 10
3	5, 15, 5
5	5, 5, 5
	1, 1, 1

∴ The LCM of 10, 15 and 20 is 2 × 2 × 3 × 5 = 60