Progression Practice Test 1

Question : 13 of 23

Marks: +1, -0

Find the sum of 34 terms of the AP.
- 5, - 3, -1, 1, 3, ........

Solution:

Let ‘a’ be the first term and ‘d’ be the common difference
a = -5; d = 2
∴ Required sum

=S_34=34/2[2(-5)+(34-1)2]

=952

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