28 students are badminton club members only.
- ^9 z3 J0 T5 Q( S/ {: i& l
& ^+ w* x! O7 {+ v7 E. btvb now,tvbnow,bttvb2 students are in computer club only.
8 W0 }' ]- n9 s( Z
, T) z2 z: W4 o4 Z! L) ~+ f9 x2 N) utvb now,tvbnow,bttvb12 students are in both badminton and computer club.8 _2 p* E! B% K. \' K8 |
5.39.217.777 r$ ]" j, b! H! F
therefore 28+2+12+6=48 |
發表於 2007-9-12 01:49 PM
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