Question

At least how many soldiers are to be removed from 1800 soldiers so that
the number soldiers in a row and total numbers of rows will be same?

Answer 1

Let us start by taking the square root of 1800.

√1800 =42.42…

Next let us take this number and discard the fraction.

42

Then we will square 42:

42*42 = 1764

Finally subtract 1764 from 1800:

1800–1764 = 36