Question

Se dau multimile:
A={x/x ∈ N, x ≤ 6}
B={ x/x ∈ N, 5< x< 7}
C={x/x ∈ N, 3< x< 7}
aflati cardinalul multimilor: (B/A) U (C/B), (A un u intors semnul de intersectie)/(B U C)

Answer 1

A={0,1,2,3,4,5,6}, B={6},C={4,5,6}. CARD A=7, CARD B=1, CARD C=3. B/A=MULTIMEA VIDA, C/B={4,5} REUNIUNEA ESTE {4,5},,