In the given Venn diagram, A denotes mangoes, B denotes bananas, C denotes apples, and the numbers in each section represent the number of persons who like those fruits. How many persons like only bananas?

31

A denotes mangoes

B denotes bananas

C denotes apples

Step 1 ) Look at the all figures properly but  part of bananas only

Step 2) Look at  number represents persons like only bananas

Step 3) By visual observations we conclude that 31  is the number which represents persons like only bananas