Divide the 12 balls into 4 groups of 3's.; w, P+ P6 b* c! N, `( b
Weigh group 1 & 2tvb now,tvbnow,bttvb( V! u+ @, M8 x5 j6 G4 ~2 }
then weigh group 2 & 3
. X# }% ]# v) y/ C6 B- G/ ^5.39.217.77:8898If the results are Equal & Equal, it means the ball with the different weight is in group 4.( |4 b9 x9 x: T* N5 r9 B j
If the results are Equal & Unequal, it means the ball is in group 3.
) f; ?) H" o4 @6 x0 z- ~; qtvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.! t Z2 }, P( g
If the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇. y$ \% E0 A p/ I- r) f) e
: Y3 J4 H; E& I4 ~! [! ~ l公仔箱論壇Once you determine the group that contains the ball.
' W+ E: k6 A' s) xSimply weigh two of the balls |
發表於 2007-11-15 03:54 PM
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