sum of first 55 terms in an A.P. is 3300, find its 28th term Question sum of first 55 terms in an A.P. is 3300, find its 28th term in progress 0 Math Caroline 3 weeks 2021-11-06T23:50:09+00:00 2021-11-06T23:50:09+00:00 1 Answer 0 views 0

## Answers ( )

Let a and d be the first term and common difference of the given AP respectively.

Given, s55= 3300

⇒ 2/55

[2a+(55−1)d]=3300

⇒55[a+27d]=3300

⇒a+27d=60

Hence, 28th

term a28 =a+27d=60

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