In the given Venn diagram, the triangle represents students playing table tennis, the rectangle represents students playing badminton, the circle represents female students, and the pentagon represents students playing football. The numbers given in the diagram represent the number of persons in that particular category.

 How many female students play both table tennis and badminton?

7

The triangle represents students playing table tennis

The rectangle represents students playing badminton

The circle represents female students

The pentagon represents students playing football.

Step 1 ) Look at the figure of  Circle , Triangle , rectangle

Step 2) Look at  number given in female students play both table tennis and badminton

Step 3) By visual observations we conclude that 7  is the number which represents female students play both table tennis and badminton