Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3 - Page 81: 14

B' = {51,52,53,54.......}

U = {1,2,3,4.....} B = {1,2,3,4,5....50} The set B' contains the elements that are not present in the set B. The elements of set B i.e.1,2,3,4,5....50 must not be present in set B. The elements of B' are 51,52,53,54...... Therefore B' = {51,52,53,54.......}