find the sum of n natural number
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to find the sum of first n natural numbers we use (n(n+1))/2.
example:if n =5 ;(n(n+1))/2=(5(5+1))/2=(5(6))/2=30/2
=15.
So,1+2+3+4+5=15
hope it helps u
#aditya
example:if n =5 ;(n(n+1))/2=(5(5+1))/2=(5(6))/2=30/2
=15.
So,1+2+3+4+5=15
hope it helps u
#aditya
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