Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb+ |' S E: T% R% M* ]
Weigh group 1 & 2
m+ q( @3 }! o$ x& j* gthen weigh group 2 & 3公仔箱論壇4 }( F! C+ w7 k
If the results are Equal & Equal, it means the ball with the different weight is in group 4.公仔箱論壇/ G+ `* G6 v- W0 ?" `1 H3 {
If the results are Equal & Unequal, it means the ball is in group 3.
0 c1 j1 b3 V7 ~) ~8 L$ `tvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.www3.tvboxnow.com7 g @/ f$ h) w; m% X S& j, o8 F
If the results are Unequal & Unequal, it means the ball is in group 2.
8 M+ k8 F1 ]3 b6 H0 Btvb now,tvbnow,bttvb
T: i( `: Y' z7 yOnce you determine the group that contains the ball.! ]& A% }' Z& i2 x
Simply weigh two of the balls |