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Question Number 70512 by abdusalamyussif@gmail.com last updated on 04/Oct/19
The faculty of science news paper reports that the combined membership of the  mathematics club and science  club is 122 students. What is the total membership of the chemistry club?
$$\mathrm{The}\:\mathrm{faculty}\:\mathrm{of}\:\mathrm{science}\:\mathrm{news}\:\mathrm{paper}\:\mathrm{reports}\:\mathrm{that}\:\mathrm{the}\:\mathrm{combined}\:\mathrm{membership}\:\mathrm{of}\:\mathrm{the}\:\:\mathrm{mathematics}\:\mathrm{club}\:\mathrm{and}\:\mathrm{science}\:\:\mathrm{club}\:\mathrm{is}\:\mathrm{122}\:\mathrm{students}.\:\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{total}\:\mathrm{membership}\:\mathrm{of}\:\mathrm{the}\:\mathrm{chemistry}\:\mathrm{club}? \\ $$
Commented by tw000001 last updated on 14/Oct/19
To put it simply,  n(C_M  ∪C_S )=122  n(C_C )=?  But there′s no clue in this question,  So n(C_C )=0.
$$\mathrm{To}\:\mathrm{put}\:\mathrm{it}\:\mathrm{simply}, \\ $$$${n}\left({C}_{{M}} \:\cup{C}_{{S}} \right)=\mathrm{122} \\ $$$${n}\left({C}_{{C}} \right)=? \\ $$$$\mathrm{But}\:\mathrm{there}'\mathrm{s}\:\mathrm{no}\:\mathrm{clue}\:\mathrm{in}\:\mathrm{this}\:\mathrm{question}, \\ $$$$\mathrm{So}\:{n}\left({C}_{{C}} \right)=\mathrm{0}. \\ $$
Answered by tw000001 last updated on 14/Oct/19
The answer is 0 because  the chemistry club is unexisted.
$$\mathrm{The}\:\mathrm{answer}\:\mathrm{is}\:\mathrm{0}\:\mathrm{because} \\ $$$$\mathrm{the}\:\mathrm{chemistry}\:\mathrm{club}\:\mathrm{is}\:\mathrm{unexisted}. \\ $$

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