28 students are badminton club members only.
$ J( H: E7 E# f: _1 qtvb now,tvbnow,bttvb
) Y) q3 P5 ~. @5.39.217.762 students are in computer club only.
i w( V1 G1 u# M4 ~+ ~tvb now,tvbnow,bttvb5.39.217.76$ L" @5 X! b- t/ `7 c
12 students are in both badminton and computer club.
+ X0 N$ f8 b9 [$ |1 _! {公仔箱論壇
) h" }; D5 ]( j0 |5.39.217.76therefore 28+2+12+6=48 |