Question

In a science course, all students offered atleast one of subjects maths, physics, chemistry,
162 took maths, 153 took physics, 198 took chemistry, 99 took maths and physics, 90 took
physics and chemistry, 117 took maths and chemistry and 72 took all the three what
number of students offered the above course ? (Sets lesson)​

Answer 1

Answer:

a school, students must take at least one of these subjects: Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics only and 5 take Maths and Chemistry only. Of these 50 students,

take Maths only,

take Physics only and

take Chemistry only. Draw Venn diagram, find

and hence find the number taking Maths.