1. {2,3,4{
2. x < 16 , B are 14 elemente (adica fara 0 si 16)
3. {1,2,5,7,8}
4. {1,2,3,6,9,18}
5. 2x+1= 7, 2x = 6, x=3
8x+1= 25, 8x= 24, x= 3
deci x={3}
6. submultimea se afla prin relatia 2^(cardinal C) =2^4=16
7. Fals
8. Adevarat
