Răspuns :
0+1+2+3+4+.............+100=S
S=((1+100)*100):2
S=(101*100):2
S=10100:2
S=5050
S=((1+100)*100):2
S=(101*100):2
S=10100:2
S=5050
se face cu suma lui gauss
1+2+3+...+n= n(n+1) / 2
1+2+3+...+100=100x101 /2= 50x101= 5050
1+2+3+...+n= n(n+1) / 2
1+2+3+...+100=100x101 /2= 50x101= 5050