Question

C) Which of these

numbers is a square number?
A: 4x10^5
B:9x10^4
C:4x10^3
D:9x10^3

Answer 1

A= 400,000 - not square
B= 90,000 - square (300 x 300)
C= 4,000 - not square
D= 9,000 - not square

So B