Question

Ques. in a survey of 25 students it was found that 15 likes math, 12 likes physics, 11 likes chemistry, 5 likes math and chemistry, 9 like math and physics, 4 like physics and chemistry and 3 likes all subjects. find the no. of students who like,
1. only chemistry.
2. only math.
3. only physics.
4. one of the subjects.
5 at least one of the subjects
6. physics and chemistry but not maths
7 math and physics but not chemistry.
8. none of the subjects.

Answer 1

1. 13
2. 17
3. 16
4. 1
5. 1
6. 4
7. 9
8. 4