Question

1)Fie multimile A = {0,1,4}, B = {0,1,3}. Calculati: A∪B, A∩B, A-B, B-A
2)Scrieti valoarea de adevar a urmatoarelor propozitii:
a) {x ∈ N | x < 0} = ∅ b) 2 ∉ {x | x ∈ N si x $\leq$ 3}
c) {2,3} ⊂ {1,2,4} d) 2 ∈ {0,1,2,4,5}
3)Determinati elementele multimilor:
A = {x ∈ N | x (se divide la) 5 si x $\leq$ 35
B = {X ∈ N | x | 24 si x < 15}
4) Determinati multimile A si B, Stiind ca indeplinesc simultan conditile:
A) A∪B = {1,2,3,4} B)A∩B = {2,3} C) A-B = {1}
5/ Se consider multimile: A = {$- -\\ 1a6b |$$- -\\ 1a6b$ (se divide la) 5 si 4 | (a+b)} B = {$- -\\ 1x6x |$$- -\\ 1x6x$ (se divide la) 2} Calculati: A∪B, A∩B, A-B, B-A

Answer 1

1. aub=0 1 3 4
anb=0 1
a-b=4
b-a=3