a) 11(2)=1 x 2^0 + 1 x 2^1=3 (de la stanga la deapta)
b) 10101(2)=1 x 2^0 + 0 x 2^1 + 1 x 2^2 + 0 x 2^3 + 1 x 2^4=21
c) 100110(2)=6+32=38
d) 111001(2)=57
e) 1201(3)=1 x 3^0 + 0 x 3^1 + 2 x 3^2 + 1 x 3^3=46
f) 1201(4)=1 x 4^0 + 0 x 4^1 + 2 x 4^2 + 1 x 4^3=97
g) 4201(5)=1 x 5^0 + 0 x 5 + 2 x 5^2 + 4 x 5^3=1+50+500=551