In a survey of students about favorite​ sports, the results include

19 who like​ tennis,26 who like​ football,9 who like tennis and​ football,11 who like tennis and​ baseball, 17 who like football and​ baseball,3 who like all three​ sports, and8 who like none of the sports. How many students like only tennis and​ football? How many students like only tennis and​ baseball? How many students like only baseball and​ football?

How many students like only tennis and​ football?

To find out how many students like only tennis and football, we need to subtract the number of students who like both sports from the total number of students who like football.

The total number of students who like football is 26.
The number of students who like both tennis and football is 9.

Therefore, the number of students who like only tennis and football is 26 - 9 = 17.