Question

. In a class of 25 students, it was found that 15 had taken Physics, 12 had taken

Chemistry & 11 had taken Biology, 5 had taken Physics & Biology, 9 had taken Physics

& Chemistry, 4 had taken Biology & Chemistry & 3 had taken all the three subjects.

Find the numbers of students that had

(a) Only Physics

(b) Only Chemistry

(c) Physics & Chemistry but not Biology

(d) Biology & Physics but not Chemistry

(e) Only one of the subjects

(f) At least one of the three subjects

(g) None of the three subjects.


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Answer 1

Answer:

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