An AP consists of 50 terms of which 3rd term is 12 and the last term is 106 find the sum of 25 terms.
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64
a+2d=12
a+49d=106
⇒47d=94
⇒d=2
a+4=12
⇒a=8
29th term : -
a+28d=8+56=64
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a+2d=12
a+49d=106
⇒47d=94
⇒d=2
a+4=12
⇒a=8
29th term : -
a+28d=8+56=64
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