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28 students are badminton club members only.' H' @" D! z  H- O$ l% J7 ]. J+ ]

; F' O5 l- W$ @: otvb now,tvbnow,bttvb2 students are in computer club only.5.39.217.77( R/ ]+ k8 q: k# \& x# ~  t
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12 students are in both badminton and computer club.公仔箱論壇2 ]8 o6 s7 e; I. w

6 T5 g* [! F1 p公仔箱論壇therefore 28+2+12+6=48
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