What is the least square number which is divisible by 2, 3, 10, 18 and 20?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 900
Concept used:
LCM of the numbers.
Calculations:
LCM of 2, 3, 10, 18 and 20 = 180
180 = 22 × 32 × 5
To make the number a perfect square 180 should be multiplied by 5
Therefore, the least square number which is divisible by 2, 3, 10, 18 and 20 = 900