How many numbers are there between the squares of the following?
$4^2$ and $5^2$.

Express the square number as the sum of odd numbers :

$36=$

Express the square number as the sum of odd numbers :

$100=$

Express the square number as the sum of odd numbers :

$121=$

Answer the following.

How many non-square numbers are there between ${12}^2$ and ${13}^2$?

Evaluate $(38{)}^2–(37{)}^2$.

How many numbers lie between squares of the following numbers

$12$ and $13$

By observing the following pattern, generate the next three lines:

$100-19=81$

$81-17=64$

$64-15=49$

If $n$ is odd, then $\left(1+3+5+7+ ... \mathrm{to} n \mathrm{terms}\right)$ is equal to

Express the square number as the sum of odd numbers :

$49=$

Without adding, find the value of $(1+3+5+7+9+11+13)$.

Express $100$ as the sum of $10$ odd numbers