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Question 0401b
Arithmetic and Geometric Progressions (APs, GPs)
AP II
Question
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Find the sum of the following arithmetic series:
9
+
7
+
5
+
…
−
23.
9 + 7 + 5 + \ldots - 23.
9
+
7
+
5
+
…
−
23.
Attempt
S
n
=
{S_{n}=}
S
n
=
Answer
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