If set {1,3,5,7}, set {2,3,4,5.} 1. Find the set of a ∩ B 2. Find the set of AUB

If set {1,3,5,7}, set {2,3,4,5.} 1. Find the set of a ∩ B 2. Find the set of AUB


A∩B={3,5}
A∪B={1,2,3,4,5,7}