Sets,grade 10, question 4

27/01/2017 Grade 10

In a class of 20 students, 2 students don’t play any of the mentioned games, basketball or football ; while 15 students play football, and 9 students play basketball. Use a Venn diagram to show the number of students who play both football and basketball, that of those who play football only, and that of those who play basketball only.

How many students don't play Football?