60 students participated in one or more of the three competitions, i.e. Quiz, Extempore and Debate. A total of 22 students participated either in Quiz only or in Extempore only. 4 students participated in all three competitions. A total of14 students participated in any of the two competitions only. How many students participated in Debate only?

20

60 students participated in one or more of the three competitions, i.e. Quiz, Extempore and Debate. A total of 22 students participated either in Quiz only or in Extempore only.

4 students participated in all three competitions.

A total of14 students participated in any of the two competitions only

 Number of students who  participated in Debate only = 60 - (22 + 4 +  14 )= 60 - 40 = 20