28 students are badminton club members only.3 t* w. i9 p$ l# I2 U9 T
/ I8 j" j& r) w3 c8 i! i, W& K) a2 students are in computer club only.
% m$ N5 n& a5 A& y1 K7 j z+ otvb now,tvbnow,bttvb
& O% `2 [! n' ^3 S/ d: ltvb now,tvbnow,bttvb12 students are in both badminton and computer club.
6 M: {+ t& j% V G2 y# g0 m( p公仔箱論壇
J2 S* Y2 J! |( T7 l1 c# sos.tvboxnow.comtherefore 28+2+12+6=48 |