sum of series: 1+2+3+=+n is (a) n (n+1)/2 (b) n (n+1) (c) (n+1)(n+2)/2 (d) none of these ​

Question

sum of series: 1+2+3+…………+n is
(a) n (n+1)/2 (b) n (n+1) (c) (n+1)(n+2)/2 (d) none of these

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Jade 2 weeks 2021-09-10T20:47:24+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-10T20:48:53+00:00

    Answer:

    option a is the answer for the given problem

    0
    2021-09-10T20:49:09+00:00

    Answer:

    (a) n(n+1)/2

    Please mark it as brainliest

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