If a number 'a' is divisible by 18 and another number 'b' is divisible by 12, then find the number by which (a2 - b2) is divisible.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 36.
If a is divisible by 18 and b is divisible by 12
Then, (a2 - b2) is divisible by the L.C.M of (18 and 12)
So,
L.C.M(18 and 12) = 36
Hence,
(a2 - b2) is divisible by 36