Could you with a algebra problem (unions and intersections)? got stuck on this ninth one.
construct the appropriate number sets with the given information. use the sets to match the following:
given
a = ø
b = b
c = then a ∪ b = b
d = a
e = then a ∩ b = b
1. if a union b
2. a union c
3. a intersect b
4 . a intersect c
5. b intersect c