take out 10 balls and 5 in each side
' S$ ~0 ~; w$ D' [! z8 k3 g M: ?+ a% Zif both side balance mean the other 2 balls one of them must be the heavy one then just take them to weight will find out which one is heavier.
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& e; @0 V5 y5 m9 u; F5 G5.39.217.77if the heavy ball is inside the 10 balls, take out 4 balls from the heavier side which had 5 balls to weight 2 balls in each side.
5 F7 _2 `5 b% i9 l! R s; a0 }4 @; Qif both side balance, which mean the one left is heavy one if not, just take the heavier side to weight will find out which one is the heaviest one.
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% j6 I& [! b* y0 ~) q) V& A2 o5.39.217.77used less then 1 min to find out the answer.... |
發表於 2007-12-31 05:47 AM
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發表於 2008-1-1 08:48 AM
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