Chapter 2 - Set Theory - Chapter Summary, Review, and Test - Review Exercises - Page 109: 43

(AUB)' = {2,3,7}

The set (AUB)' represents all the elements of set 'U' which are not there in set AUB. From the given Venn diagram the region IV represents the set (AUB)'. So, The elements of set (AUB)' are 2,3,7. (AUB)' = {2,3,7}