28 students are badminton club members only.0 _1 P, W, s4 h) G0 s1 A1 I* x
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2 students are in computer club only.公仔箱論壇% D1 J5 A& o6 w$ q( Q% W% D# \0 H
公仔箱論壇5 {+ M# V# D. e0 a6 ^ u" L
12 students are in both badminton and computer club.
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! W$ Y1 ]# M6 n/ P, W- Otvb now,tvbnow,bttvbtherefore 28+2+12+6=48 |