Dau coroana
Ajutatima

Răspuns:
a) a={0,1,2,3,4,5,6,7,8}
b={0,1,2,3,4,5,6,7,8,9,10}
d={0,1}
c={0}
b) a={0,1,2,3,4}
c={0,1,2,3,4,5,6,7,8,9}
b={0,1,2,3}
d={0}
c) a={5,6,7}
a={1,2}
a={0,1,2,3,4,5,6,7}
a={139,138,137,136,135,134,133,132,131}