Question

what is the least number which can be subtracted from 631 to make it a perfect square?

Answer 1

we can substract 6 from 631 ....i. e. (631-6 = 625) 625 is the square of 25.....

Answer 2

the answer is 6 because 625 is the nearest perfect square to the no 631 .
always remember learn square no till 30