Answer
AUB'= {1,2,3,4,6,7,8}
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 AUB'.
Lets B' = all the elements of set'U' which are not there in set B = {3,6,7,8}
AUB'={1,2,3,4} U {3,6,7,8} = {1,2,3,4,6,7,8}
(All the elements of set A and the set B' which are not there in set A).
