Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3 - Page 81: 40

B ∩ U = {1,2,3}

B ∩ U U = {1,2,3,4,5,6,7} B = {1,2,3} The set B ∩ U represents the elements which are common to both the sets B and U. The elements which are common to both the sets are 1,2,3. The elements of B ∩ U are 1,2,3. B ∩ U = {1,2,3}