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 what is the least number that must be subtracted from 149 to make it a perfect square number 

since

and 149 is 5 more than 144.

therefore we must subtract 5 from149 to make it perfect square.

and the square root of perfect square is 12.

hope this helps you.

cheers!!

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first take the prime factorisation of the no. then which no is extra that will be subtracted

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suhani posted the wrong answer she is not intelligent

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 Finding the square root of 149 by division we get: 30 as the square root and 59 as the remainder. To make it a perfect square the least number to be subtracted is 59.  149 - 59 = 90 which is a perfect square.

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Sorry I posted the wrong answer, here is the correct one:

Finding the square root of 149 by division we get: 12 as the square root and 5 as the remainder. To make it a perfect square the least number to be subtracted is 5. 149 - 5 = 144 which is a perfect square.

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