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Question 0401b
Arithmetic and Geometric Progressions (APs, GPs)
AP II
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Find the sum of the following arithmetic series:
−
1
−
3
−
5
−
…
−
21.
- 1 - 3 - 5 - \ldots - 21.
−
1
−
3
−
5
−
…
−
21.
Attempt
S
n
=
{S_{n}=}
S
n
=
Answer
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