Question

2. All the students in SS3 of a named school take either Mathematics (M), or Physics (P) or Chemistry (C). 40 take Mathematics, 42 take physics, 38 take Chemistry, 20 take Mathematics and Physics, 28 take Physics and Chemistry while 25 take mathematics and chemistry.
How many take
(a) All the three subject:
(b) Mathematics, but neither Physics nor Chemistry
(c) Physics, but neither Mathematics nor Chemistry

Answer 1

posted three times
have you drawn the Venn diagram?

Answer 2

Answers to the questions

Answer 3

All the 62 student in ss1 of a named school take either mathematics or physic or chemistry. 40 take mathematics,42 take physics, 38 take chemistry, 20 take mathematics and physics, 28 take physics and chemistry while 25 take mathematics and chemistry

Answer 4

1.n(u)=n(M)+n(P)+n(C)-n(MnP)-n(PnC)-n(MnC)+n(MnPnC)