Question

Se dau multimile a=123 b=246 c=357 Calculati
a=A∩B
b=A∩C
c=B∩C
d=A∪B
e=A∪C
f=B∪C
g=A/B
h=A/C
i=∅∩C

Answer 1

A∩B= {2}; A∩C= {3}; B∩C=∅; A∪B={1,2,3,4,6}; A∪C={1,2,3,5,7}; B∪C={2,4,6,3,5,7}; A/B={1,3}; A/C={1,2,3}; ∅∩C=∅