Question

Which is not a square number?
A. 1
B. 4
C. 9
D. 15

Answer 1

Answer:

D. 15

1 is the square of 1

4 is the square of 2

9 is the square of 3.

hope it helps you:)

Answer 2

Answer:

D. 15

Step-by-step explanation:

$1 {}^{2} = 1 \\ \\ 2 {}^{2 } = 4 \\ \\ 3 {}^{2} = 9$

HOPE THIS HELPS :)