Divide the 12 balls into 4 groups of 3's. 6 A) Q$ h+ i7 @: f% l) A2 h2 `Weigh group 1 & 2 7 k; e2 D; n) B( r5.39.217.76then weigh group 2 & 35.39.217.76& d5 i+ s2 T( i2 w# W% Q& E
If the results are Equal & Equal, it means the ball with the different weight is in group 4. * B, X" Q; L L/ v5 y v5 jIf the results are Equal & Unequal, it means the ball is in group 3.5.39.217.76/ y% l1 y6 X8 N) }7 \
If the results are Unequal & Equal, it means the ball is in group 1.tvb now,tvbnow,bttvb8 h8 c- [; n4 o# w0 x
If the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇1 {: E! x5 O' @: h; R
5.39.217.76. p1 k1 A5 x' Z: K! V
Once you determine the group that contains the ball.8 J# v0 @) d. z: }
Simply weigh two of the balls