Question

Find the next number in the series $4,12,30,68,.................$

• A. $140$
• B. $146$
• C. $160$
• D. $144$

Answer 1

The correct option is B $146$

Given series:- $4,12,30,68,....$

Let the next number in the given series be $x$.

Now,

$12=(4\times 2)+4$

$30=(12\times 2)+6$

$68=(30\times 2)+8$

Therefore,

$x=(68\times 2)+10=136+10=146$

Hence the correct answer is $\left(B\right)146$.