Maths · Union, intersection and complement of sets and their algebraic properties
In a class, 20 opted for Physics, 17 for Maths, 5 for both and 10 for other subj
In a class, 20 opted for Physics, 17 for Maths, 5 for both and 10 for other subjects. The class contains how many students?
- A. 35
- B. 42
- C. 52 \)
- D. 60
Step-by-step solution
Physics only = 20-5 = 15, Maths only = 17-5 = 12, total = 15 + 12 + 5 + 10 = 42
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