Question

How many natural numbers lie between ${111}^2$ and ${112}^2$ ?

• A. 243
• B. 300
• C. 222
• D. 250

Answer 1

The correct option is C 222

As there are 2n natural numbers which lie between two consecutive perfect square numbers $n^2$ and $(n+1{)}^2$. Therefore, between ${111}^2$ and ${112}^2$, there are $2\times 111=222$ natural numbers.