Question

Write the first five square numbers.

Answer 1

Find the first five square numbers:

Square of a number $a$ is defined as $a^2$.

$\begin{array}{rcl}{1}^2& =& 1\\ 2^2& =& 4\\ 3^2& =& 9\\ 4^2& =& 16\\ 5^2& =& 25\end{array}$

Hence, the first five square numbers are $1,4,9,16,25$.