28 students are badminton club members only.
" A3 M" f+ e; J K/ w9 X# \公仔箱論壇5.39.217.77:88989 V& ^9 n' w* H: o( c
2 students are in computer club only.
3 g, l& a% Y6 b: | ] F
: D2 X+ [* _8 G: j3 }2 Y. Ttvb now,tvbnow,bttvb12 students are in both badminton and computer club.
9 W$ z4 |1 G- g3 ^公仔箱論壇
1 E9 M& ~" v V. I* n! otherefore 28+2+12+6=48 |