What is the least square number that is divisible by 8, 12, and 20?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 3600
LCM of 8, 12 and 20 = 120
120 = 23 × 3 × 5
For a perfect square, all powers must be even.
Multiply by 2 × 3 × 5 = 30
Required number = 120 × 30 = 3600
Therefore, the least square number is 3600.