A) 900
B) 400
C) 36
D) 256
Correct Answer: A
Solution :
LCM of \[\text{12},\text{15},\text{2}0=\text{2}\times \text{2}\times \text{3}\times \text{5}\] Required perfect square \[=\text{2}\times \text{2}\times \text{3}\times \text{3}\times \text{5}\times \text{5}=\text{9}00\]
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