Delhi Police Constable Exam Model Paper 8

Question : 78 of 100

Marks: +1, -0

If HCF (a, b) = 12, LCM (a, b) = 144 and a = 36, then find the value of ‘b’?

Solution:

Tips & Tricks
GIVEN:
HCF (a, b) = 12
LCM (a, b) = 144
a = 36
FORMULA USED:
a × b = HCF (a, b) × LCM (a, b)
CALCULATION:
We know:
First number × Second number = HCF × LCM

36 × b = 12 × 144

⇒

b = (144 × 12)/36

⇒

b = 48

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