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Question

 should be multiplied to 1575 to make it a square number.
  1. 4
  2. 5
  3. 6
  4. 7


Solution

The correct option is D 7

Prime factorization of 1575:
5157553153633217

1575=5×5––––×3×3––––×7           In pair    In pair   Not in pair
 

So to make it a perfect square, we need to multiply 1575 with 7.

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