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
Caroline 3 weeks 2021-11-06T23:50:09+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-11-06T23:52:01+00:00

    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

    Hopefully you got the answer please mark as brainlist.

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )