Sum of series.I +2+3+........+n is(a) n(n+1)/2(b) n(n+1)(c) (n+1)(n+2)

1.	Sum of series.I +2+3+........+n is(a) n(n+1)/2(b) n(n+1)(c) (n+1)(n+2)/2(d) none of these
Answer» Answer: SUM of series : 1+ 2+ 3+ ........+ N =》 n(n+1)/2. Hence , OPTION a is correct one. If my answer helps you plz mark me as a brainlist . Thankyou _by Shivapotti

Sum of series.I +2+3+........+n is(a) n(n+1)/2(b) n(n+1)(c) (n+1)(n+2)/2(d) none of these

Answer»

Answer:

SUM of series : 1+ 2+ 3+ ........+ N

=》 n(n+1)/2.

Hence , OPTION a is correct one.

If my answer helps you plz mark me as a brainlist .

Thankyou

_by Shivapotti

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Sum of series.I +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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Sum of series.I +2+3+........+n is(a) n(n+1)/2(b) n(n+1)(c) (n+1)(n+2)/2(d) none of these