Question

Ques-6 What should be subtracted from 1311 so that the difference is a
perfect square ? Also find the square root of the number so obtaind​

Answer 1

Answer:

402

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

Here, we get the remainder 2. Therefore 2 must be subtracted from 402 to get a perfect square.

therefore402-2=400∴402−2=400

Hence, the square root of 400 is 20.