28 students are badminton club members only.公仔箱論壇) h# f. |8 V2 b# b0 W' y+ V& D
7 l( Y+ T# ?+ y8 F ?tvb now,tvbnow,bttvb2 students are in computer club only.- ]; k; H$ @- F) ?8 R1 A( U
TVBNOW 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。8 O; ?, T4 y9 J! r2 r( v
12 students are in both badminton and computer club.TVBNOW 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。* N* n5 Q# U: C, |( ~0 @! @& H
/ n" D# m1 S$ x% m0 E" g7 M# s( _
therefore 28+2+12+6=48 |