28 students are badminton club members only.公仔箱論壇: u9 u/ l' x, u7 V6 y7 X( R
+ L- e) O+ r4 h ]# ~' m, O; S( G2 students are in computer club only.
3 F- h: e. R# L* QTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
. ` g+ z6 [. }* S1 A9 q$ C3 @公仔箱論壇12 students are in both badminton and computer club.
2 w6 ^7 D5 i; ^8 M2 J% c* N5 r' g# j3 b! v5 _% G
therefore 28+2+12+6=48 |
發表於 2007-9-12 01:49 PM
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