Answer
A'∩B = {5}
Work Step by Step
Given,
U={1,2,3,4,5,6,7,8}
A={1,2,3,4}
B={1,2,4,5}
We need to find A'∩B.
Lets A' = all the elements of set'U' which are not there in set A = {5,6,7,8}
A'∩B={5,6,7,8} ∩ {1,2,4,5} = {5}
(All the common elements of set A' and the set B).
