Question

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
$3,4,7,7,13,13,21,22,31,34,?$

• A. $42$
• B. $43$
• C. $51$
• D. $52$

Answer 1

Answer: (B)

$43$

The given sequence is a combination of two series :
$\text{I}$. $3,7,13,21,31,?$ and
$\text{II}$. $4,7,13,22,34$
The pattern in $\text{I}$ is $+4,+6,+8,+10$, .....
The pattern in $\text{II}$ is $+3,+6,+9,+12$, .....
So, missing term $=31+12=43$.