Mathematics · Progressions
If the nth term of an arithmetic progression is 7n - 2, then its sum to n terms is:
- 17n2 - 2n
- 212(7n2 + 3n)✓
- 37n2 - 3n
- 412(7n2 + 2)
Correct answer
12(7n2 + 3n)
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