Question 14
ProgressionsEvaluate Σn=2n=4(2n + 1).
- A.28
- B.31
- C.29
- D.32
Show the answer and explanation
Answer: B (31)
Explanation
(2² + 1) + (2³ + 1) + (2⁴ + 1) = 5 + 9 + 17 = 31.
Evaluate Σn=2n=4(2n + 1).
Answer: B (31)
(2² + 1) + (2³ + 1) + (2⁴ + 1) = 5 + 9 + 17 = 31.