Divide the 12 balls into 4 groups of 3's.
' }" A T( T. X2 h3 zWeigh group 1 & 25.39.217.769 C/ c, y# c4 d2 w) N0 t9 x
then weigh group 2 & 3
$ g8 b! r5 b4 D N: K* Ltvb now,tvbnow,bttvbIf the results are Equal & Equal, it means the ball with the different weight is in group 4.
' Y; L$ z/ J# T8 Otvb now,tvbnow,bttvbIf the results are Equal & Unequal, it means the ball is in group 3.5.39.217.764 J# O4 F" \1 ~1 p# T
If the results are Unequal & Equal, it means the ball is in group 1.
! [" R2 d& z ^: X) ^8 e; n' r( \+ v公仔箱論壇If the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇3 X) i; G0 u; p5 g
- N6 s) L+ t+ ]+ ]tvb now,tvbnow,bttvbOnce you determine the group that contains the ball.
8 ?" {0 i0 y* \% F1 n( w: aSimply weigh two of the balls |
發表於 2007-11-15 03:54 PM
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