28 students are badminton club members only.tvb now,tvbnow,bttvb1 R- P3 a' |3 i+ k. |9 h
5.39.217.766 q( ~ j: g' m
2 students are in computer club only.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。$ y) [3 I# P6 m- n; d1 `
$ S+ c$ X7 J- z4 M `: J12 students are in both badminton and computer club.+ a9 {1 k) ^: y
' H7 h! ^3 {/ v; \, [! W5.39.217.76therefore 28+2+12+6=48 |