Question

se dau multimile A = {-2, 0, 1, 3} si B = {-1, 0, 2, 3}. Cardinalul multimi A U B este:

a) 5
b) 6
c) 144
d) 200​

Answer 1

$\it A\cup B=\{-2,\ -1,\ 0,\ 1,\ 2,\ 3,\} \Rightarrow card(A\cup B) = 6$

Answer 2

Răspuns:

A U B = {-2, -1, 0, 1, 2, 3}

Card = 6