Question

During a mass drill exercise, 7930 students are arranged in rows such that the number of students in each row is equal to the number of rows. In doing so, the instructor finds out that 9 children are left out. Find the number of children in each row of the square.
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Answer 1

Answer:

Say number of students in each row =x

Number of rows =x

According to given equation-

x

2

=6250−9

x=

6241

x=79.

Hence, there are 79 students in each row as well as 79 rows.

Answer 2

Answer:

Say number of students in each row =x

Number of rows =x

According to given equation-

x²= 6250-9

x= √6241

x=79