Answer:
T Circle is 16
Outer number is 6
40 Students
Step-by-step explanation:
21 Students total play tennis, therefore the numbers contained in circle T must add to 21. This means that the blank space contained in circle T is 5 less than 21, meaning that it is equal to 16.
6 students don't play tennis or badminton, and therefore the empty space outside of the circles is 6.
Added together, 6+16+13+5 is 40 total students who took the survey.
