Question

Find the least number that must be subtracted from 1991 so as to get a perfect square.​

Answer 1

(ii) 1989

We know that, if we subtract the remainder from the number, we get a perfect square.

Here, we get the remainder 53. Therefore 53must be subtracted from 1989 to get a perfect square.

\therefore1989-53=1936∴1989−53=1936

Hence, the square root of 1936 is 44.

Step-by-step explanation:

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