Question

In a class of 32 students, 20 passed in mathematics, 10 passed in physics, 15 passed in chemistry, 4 passed in both mathematics and physics, 6 passed in physics and chemistry and 2 students passed in all the three subjects. how many of them passed in both mathematics and chemistry?

Answer 1

Answer:

47

Step-by-step explanation:

1. 20 passed in mathematics
2. 15 passed in chemistry
3. 4 passed in mathematics and physics
4. 6 passed in physics and chemistry
5. 2 passed in all three subjects
6. 20+15+4+6+2=47