Question

find sum of first n natural numbers. assign n=10 using dvd. store the sum at 0x5000.

Answer 1

letfirst n natural no. be an AP
sn = n/2 [2a+(n-1)d]
= n/2(2(n-1)
= n/2 ( 2n-2)
n(n-1)
Sn = n^2 - n