Question

Se dau multimile A = 1,2,3, B=2,3,4 C= 1,2,4,5
Aflati A U B, A U C, B U C , ( AUB) UC , BUB, AU N*, AUN*

Answer 1

A U B= 1,2,3,4.
A U C=1,2,3,4,5.
B U C=1,2,3,4,5.
(AUB)U C= 1,2,3,4,5.
BUB=2,3,4.
AUN*=1,2,3,... pina la infinit.

Answer 2

AUB={1,2,3,4}
AUC={1,2,3,4,5}
BUC={1,2,3,4,5}
(AUB)UC={1,2,3,4}UC={1,2,3,4,5}
BUB={2,3,4}
AUN*={1,2,3,........, ∞}