Question

please solve this question 19​

Answer 1

Hii mate.....

11.(1) 11 had taken Chemistry.

(2) 15 had taken maths.

(3) 12 had physics.

(4) 4 had taken physics and chemistry.

(5) 9 had taken maths and physics.

(6) 15 had taken maths , 12 had taken physics, 11 had taken chemistry.

(7) 11 had taken chemistry.

(8) 0

Hope its help you....