Question

The LCM of two numbers is 720 while their HCF is 12. If one of the numbers is 120, then the other number is:

A 72 Correct Answer Incorrect Answer
B 144 Correct Answer Incorrect Answer
C 180 Correct Answer Incorrect Answer
D 240 Correct Answer Incorrect Answer

Solution

Given:
- LCM of two numbers = 720
- HCF of two numbers = 12
- One number = 120
Since,
HCF of two numbers × LCM of two numbers = First number × Second number
Second number = (12 × 720) / 120 = 8640 / 120 = 72
So, the other number is 72.

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