a)X=D64
D64={1,2,4,8,16,32,64}
A={1,2,4,8,16,32,64}
Y=M4<72
M4<72={4,8,12,16,20, 24,28,32,36,40,44,48,52,56,60,64,68}
B={4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68}
b)Card A=7
Card B=17
Rezulta ca:card A
c) AuB={1,2,4,8,12,16,20, 24,28,32,36,40,44,48,52,56,60,64,68}
AnB={4,8,16,32,64}
A\B={1,2}
B\A={12,20,24,28,36, 40,44,48,52,56,60,68}