The HCF and LCM of two numbers are 126 and 9, respectively. If one of the numbers is 18, then what is the other number?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 63.
We know that,
⇒ a × b = HCF × LCM
here, a and b are two numbers
Now,
⇒ 18 × b = 126 × 9
⇒ 2 × b = 126
⇒ b = 63
Hence, the other number is 63