Sper ca te.am ajutat!
A={x|x e M10 si x<50}
M10={10,20,30,40,50;60...}
X<50
X=10,20;30,40
B={x|x M5 si 8<x<25}
M5={5,10,15,20,25,30,35...}
8<x<25
X=10,15,20
D={x|x e M3, x=nr par, x<23}
M3={3,6,9,12,15,18,21,24,27...}
X<23 trebuie nr par
X=6,12,18
C nu stiu
