what is sum of first n natural number
MANKOTIA:
n(n+1)/2
n/2(2a+(n-1)d)
1+2+3+.......+n. which is in A P. Sn=n/2(a+l)=n/2(1+n)=n(n+1)/2
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sum of first n natural no. =
preet124 add it aa brainiest answer.
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Here,correct formula is
N(N+1)/2
N(N+1)/2
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