Question

In a class , 18 students took Physics , 23 students took Chemistry and 24

students took Mathematics . Of these 13 took both Chemistry and Mathematics,

12 took both Physics and Chemistry and 11 took both Physics and Mathematics.

If 6 students offered all the three subjects , find

i] total number of students in the class

ii] how many took Mathematics but not Chemistry ?​

Answer 1

Answer:

Answer is in the attachment