28 students are badminton club members only.tvb now,tvbnow,bttvb+ v+ r8 o% g, o' o; t8 E
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2 students are in computer club only.
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7 d( i; H5 q9 |# L$ h1 F( ktvboxnow.com12 students are in both badminton and computer club.tvb now,tvbnow,bttvb5 }, |0 `% M \
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。- R7 [3 x7 ^3 m" E) L6 Z
therefore 28+2+12+6=48 |