Find the least number divisible by 2, 3, 5, 6, 9, and 18, which is a perfect square.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 900.
LCM of (2, 3, 5, 6, 9, 18) = 90
90 = 2 × 3 × 3 × 5
To make it a perfect square, we need to multiply by 2 and 5.
Required number = 90 × 2 × 5 = 900