Question

745 students have to be arranged in equal to the number of rows and columns to form a square. The number of rows/columns, if 16 students are left out after the arrangement is ___

Answer 1

Number of students in the arrangement = 745 - 16 = 729.

So, the number of rows will be equal to the square root of 729

$\sqrt{729}$ = $\sqrt{27\times 27}$ = 27

Hence number of rows = number of columns = 27