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

## Answers ( )

Answer:option a is the answer for the given problem

Answer:(a) n(n+1)/2

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