h) 1+2+3+......+512 (suma Gauss)

Răspuns :

s= n(n+1)/2
s= 512(512+1)/2
s= 512•513/2
s= 262656/2
s= 131328

1+2+3+.....512=512*(512+1)/2=512*513/2=262656/2=131328