In the given Venn diagram, the Rectangle represents ‘Lawyers’. The Circle represents ‘Farmers’ and the Triangle represents ‘Unmarried’. The number given in the diagram represents the number of persons in that category.

Find the no. of person who are "Unmarried but not Lawyers".

29

The triangle represents unmarried, and the rectangle represents Lawyers but we want unmarried people who are not Lawyers.

Hence,  13 + 16 = 29