Question

In the following question, a number series is given with missing of one term. Choose the correct alternative that will continue the same pattern and replace the question mark (?) in the given series.

$28,33,40,51,64,?$

• A. $128$
• B. $32$
• C. $81$
• D. $66$

Answer 1

The correct option is C $81$

If you add prime number starting from $5$ then you will get the given series.

$\Rightarrow 28+5=33\Rightarrow 33+7=40\Rightarrow 40+11=51\Rightarrow 51+13=64$

Now by this logic

$\Rightarrow 64+17=81$