Complete the series:
3, 6, 13, 28, ?

Question

Accepted Answer

1. Find differences: $6-3=3,\ 13-6=7,\ 28-13=15$.
2. These are $2^2-1,\ 2^3-1,\ 2^4-1$.
3. Next difference is $2^5-1=31$. So next term = $28+31=59$.
4. Answer is **(c) 59**.

FINAL_ANSWER: c

Answer

Answer

Answer