Question

Se dau multimile: A= {x∈ℕ*|x≤3} si B={x∈ℕ|2≤x<6} Calculati: A∪B, A∩B, A-B, B-A.

Answer 1

A={1,2,3}
B={2,3,4,5}
A∪B={1,2,3,4,5}
A∩B={2,3}
A-B={1}
B-A={4,5}

Answer 2

A={1,2,3}
B={2,3,4,5}
A∪B={1,2,3,4,5},
A∩B={2,3},
A-B={1},
 B-A={4,5}