Divide the 12 balls into 4 groups of 3's.
" h2 A8 D C: @) G9 x5 Q6 c0 dWeigh group 1 & 2
- w: A) ]* C8 D: [( L3 ?then weigh group 2 & 3tvb now,tvbnow,bttvb/ F: ^) K4 F% Q- g! |! Y
If the results are Equal & Equal, it means the ball with the different weight is in group 4.
2 y( i* ?2 U) A1 k8 ^公仔箱論壇If the results are Equal & Unequal, it means the ball is in group 3.
" ^+ r( c" B8 B+ I% qtvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇, N# _3 C+ ?1 }8 e( ~3 u6 z
If the results are Unequal & Unequal, it means the ball is in group 2.
' o" }; N; @: x5 O( |: Hos.tvboxnow.com公仔箱論壇' _) F2 ?+ i# _0 L, W$ q
Once you determine the group that contains the ball.
7 M$ D! h7 U/ d) NSimply weigh two of the balls |