The sum of the first n terms of the arithmetic progression 5, 11, 17, 23,
MATHEMATICS
JAMB 2009
The sum of the first n terms of the arithmetic progression 5, 11, 17, 23, 29, 35, ... is?
- A. n(3n - 0.5)
- B. n(3n + 2)
- C. n(3n + 2.5)
- D. n(3n + 5)
Correct Answer: B. n(3n + 2)
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