Divide the 12 balls into 4 groups of 3's. ! f" E; R, u6 j( N8 Mtvb now,tvbnow,bttvbWeigh group 1 & 2 " a( Y; v- I4 P1 L9 ]os.tvboxnow.comthen weigh group 2 & 3* V N: d2 g9 G. L
If the results are Equal & Equal, it means the ball with the different weight is in group 4. ; u% E: }2 ~7 A' J- @9 ytvb now,tvbnow,bttvbIf the results are Equal & Unequal, it means the ball is in group 3. 1 l! {2 q/ h2 o( P. T- _$ X0 N: FIf the results are Unequal & Equal, it means the ball is in group 1. " n3 y$ A% s; U; k) K! k& ^8 W: o/ G公仔箱論壇If the results are Unequal & Unequal, it means the ball is in group 2. * t& V; n' D- U! l* J7 R, r# nos.tvboxnow.com+ {$ B7 e8 @$ q7 ~7 j7 }
Once you determine the group that contains the ball. * Q* G I8 u- t/ H& m! n- L/ uSimply weigh two of the balls
發表於 2007-11-15 03:54 PM
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