Divide the 12 balls into 4 groups of 3's. o* D) p0 I3 A; |1 R# e5 H
Weigh group 1 & 2" H* l! ~7 s- N
then weigh group 2 & 3tvb now,tvbnow,bttvb& s C0 r: c. i8 g M0 c2 B
If the results are Equal & Equal, it means the ball with the different weight is in group 4. 7 g6 g7 D ?$ S+ O' R- V6 s' }" h9 c公仔箱論壇If the results are Equal & Unequal, it means the ball is in group 3. ' e3 c: S& I! N$ y0 q6 Z" y2 W4 z公仔箱論壇If the results are Unequal & Equal, it means the ball is in group 1. 1 t: Q" e3 s; g# L) i& Y4 Wtvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2. # ~& A9 G3 N/ q- ~! W) F( b' A8 u9 [. C 3 e2 B/ X( | a1 B! V9 s3 D C) d! |Once you determine the group that contains the ball. - n) w7 u% b, U6 Q# c5.39.217.77Simply weigh two of the balls