Question

write the formula to find the sum of first n natural numbers

Answer 1

here is the answer hope it helps you

Answer 2

Heya user

ur answer follows


to find the sum of first n natural numbers

the formula used is from AP series

Sn=n/2(a+(n-1)d


where

a= first term of the AP

n= number of terms in the AP

d= common difference of the AP


or u can use


Sn=n/2(a+l)

where


a= first term of the AP

n= number of terms in the AP

l= last term of the AP

( use the second formula only if u know the last term of the AP.
otherwise first one is preferable)



hope it will help u.

Regards
Divya

^_^