Răspunsuri

2014-11-04T22:26:27+02:00



suma din primul termen este egala cu 2^100

=2^100:(2^100-1) 
1 2 1
2014-11-04T22:30:59+02:00
S=  1+2+2^2+.............+2^99
2S=2+2^2+2^3+........+ 2^99+2^100
le scad si ⇒
S=2^100-1
S:(2^100-1)=1
3 4 3