Question

How many non square numbers lie between $2^2$ and $3^2$?

• A. 3
• B. 4
• C. 6
• D. 2

Answer 1

The correct option is B 4

$2^2=4$ and $3^2=9$
The numbers between 4 and 9 are 5,6,7,8.
We also know that the number of natural numbers between $n^2$ and $(n+1{)}^2$ = 2n. In this case n=2. Hence 2n = 2 x 2 = 4.