28 students are badminton club members only.
! M9 v0 o2 Z4 u- Q( ~
, Q7 @6 @9 V" \3 w" m" Q0 a* B2 students are in computer club only.9 I- k7 r0 w' p& s" j4 H
- Z z A& ]% F, \12 students are in both badminton and computer club.tvb now,tvbnow,bttvb/ \+ r5 J; q, y& ^* [: `. }
公仔箱論壇% |% g3 z/ k$ m2 V Z+ D. _
therefore 28+2+12+6=48 |