Chapter 2 - Set Theory - 2.4 Set Operations and Venn Diagrams with Three Sets - Exercise Set 2.4 - Page 92: 34

B= {4,5,6,9,10,11}

Set B, represents the all the elements of the set B. From the given Venn diagram we can conclude that the regions II, III, V, VI represent the set B. The element of these regions are 4,5,6,9,10,11 So, B= {4,5,6,9,10,11}