The LCM of two numbers is 147, and their HCF is 7. If one number is 21, find the other number.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 49.
We know that,
L.C.M × H.C.F = a × b
here, a and b are two numbers
Now,
⇒ 147 × 7 = 21 × b
⇒ b = 147/3
⇒ b = 49
Hence, the other number is 49