28 students are badminton club members only.
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) K; h& r M, y2 @os.tvboxnow.com2 students are in computer club only.
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: \8 h* @) B& D4 K/ L0 S9 u- |, J8 X公仔箱論壇12 students are in both badminton and computer club.
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therefore 28+2+12+6=48 |