Correct Answer - Option 1 : 24, 30

Given :

HCF = 6 , LCM = 120

Concept : Product of two number = LCM × HCF

The number must be = 6X , 6Y

6 × 120 = (6X) (6Y)

(XY) = 20 = 5 × 4

hence

The number must be = 6X , 6Y

so the number is = 6 × 5 , 6 × 4 = ( 30,24)