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Question
The least perfect square,which is divisible by each 21, 36 and 66 is -
213444
214344
214434
231444
ANSWER : 1
Descrption
<p>L.C.M of 21, 36, 66 = 2×2×3×3×7×11 = 2772 </p> <p>To make it a perfect square , it must be multiplied by. 7 × 11 </p> <p>So, required number = 2<sup>2</sup>× 3<sup>2</sup>×7<sup>2</sup>×11<sup>2</sup> = 213444</p>
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