Question

Let an be the nth term of the series 5 + 8 + 14 + 23 + 35 + 50 +.... and Sn = $\displaystyle\sum_{k=1}^{n} a_k.$ Then S30 - a40 is equal to

• A. 11260
• B. 11280
• C. 11290
• D. 11310

Answer 1

Answer: (C)

11290

Answer 2

The correct option is(C): 11290