Question

If HCF (x, 20) = 2 and LCM (x, 20) = 60, then the value of x is ______.

विकल्प

• 3

• 6

• 20

• 10

Answer 1

If HCF (x, 20) = 2 and LCM (x, 20) = 60, then the value of x is 6.

Explanation:

HCF (x, 20) = 2

LCM (x, 20) = 60

We know that

a × b = HCF (a, b) × LCM (a, b)

⇒ x × 20 = 2 × 60

⇒ 20x = 120

⇒ x = `120/20`

⇒ x = 6