Question

The principal of a school asked the student
to stand in a row of 12 on the first day, row
of 15 on the second day, and row of 20 on
the third day. If the students are forming a
perfect square number, find the number
of students in the school. (Assume no
students are absent on any day)
(a) 400
(b) 900
(c) 1024
(d) 1600​

Answer 1

Answer:

A. 400

The principal of a school asked the student

to stand in a row of 12 on the first day, row

of 15 on the second day, and row of 20 on

the third day. If the students are forming a

perfect square number, find the number

of students in the school.