Question

3, 9, 6, 36, 30, ?

What will be come in place of ‘?’.

Answer 1

In the given series every next number is the square of the previous number.

$$\begin{gathered} 3^2=9 \\ {6}^2=36 \end{gathered}$$

So, the next number is also square of the previous number.

${30}^2=900$

Hence, the required answer is $900$.