Divide the 12 balls into 4 groups of 3's.5.39.217.77:88980 y K. ?! ?, \, v) x
Weigh group 1 & 2' J/ j# k1 A& Q/ c0 o; O' k+ k9 @
then weigh group 2 & 3公仔箱論壇! y9 H; D: R, g7 N. j7 r
If the results are Equal & Equal, it means the ball with the different weight is in group 4.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。8 m1 o# c& n8 `8 |& B0 W: {( ^
If the results are Equal & Unequal, it means the ball is in group 3.
7 F4 V* j4 `! H$ ~8 s0 gtvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.
. }3 ^7 P4 G( {0 u) J7 R+ T5.39.217.77:8898If the results are Unequal & Unequal, it means the ball is in group 2.5.39.217.77:8898% ]6 q# H: X3 F0 L, t) U( e
" \( J2 `/ K' |1 Y公仔箱論壇Once you determine the group that contains the ball.
" c, S4 d% c8 t( G! R- ySimply weigh two of the balls |