Among 45 students of a class, 26 attend Yoga class, 28 attend Gymnastic class and 5 students attend neither Yoga nor Gymnastic class. How many students attend both Yoga and Gymnastic classes?

14

THE LOGIC;

Among 45 students of a class, 26 attend Yoga class, 28 attend Gymnastic class and 5 students attend neither Yoga nor Gymnastic class.

Number of students who attend both yoga and gymnastic class = (26 + 28 +5) - 45 

= 59 - 45

14

Thus, 14 is correct.