Divide the 12 balls into 4 groups of 3's. 3 K! q6 |$ X1 u* Y9 M5 `1 K9 Hwww1.tvboxnow.comWeigh group 1 & 22 T% M6 E# t# I3 C- K% {- p
then weigh group 2 & 3 % m, I, G) B3 j7 u- UIf the results are Equal & Equal, it means the ball with the different weight is in group 4.4 N0 ? F# d1 X: {5 o! W% H$ X
If the results are Equal & Unequal, it means the ball is in group 3.) v7 {" ^1 l7 {$ ^6 ?5 W
If the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇 ]9 v; b/ E9 I% J
If the results are Unequal & Unequal, it means the ball is in group 2. ' R& i$ ^/ e: n: ztvb now,tvbnow,bttvb 0 E- L1 O( y S8 s公仔箱論壇Once you determine the group that contains the ball. ( p6 t) K6 u) Y公仔箱論壇Simply weigh two of the balls