Divide the 12 balls into 4 groups of 3's.
, l$ u0 _4 C& ]" L, _! f( ]www2.tvboxnow.comWeigh group 1 & 2公仔箱論壇# E4 W# f0 Y. m
then weigh group 2 & 3www2.tvboxnow.com6 m6 f3 w X( i
If the results are Equal & Equal, it means the ball with the different weight is in group 4.
3 J2 s+ q; C8 S( Ytvb now,tvbnow,bttvbIf the results are Equal & Unequal, it means the ball is in group 3.
$ ^) w; ?9 @9 S' [If the results are Unequal & Equal, it means the ball is in group 1.: v# X+ | k- j2 s# }0 u
If the results are Unequal & Unequal, it means the ball is in group 2.tvb now,tvbnow,bttvb8 Q- Q) X& |4 V e7 s* d' ^4 p
C* F: ?; u2 r' ^! Mtvb now,tvbnow,bttvbOnce you determine the group that contains the ball.
# P) H6 d! U3 `; lSimply weigh two of the balls |