Divide 3 groups first.1 i# a6 G" {: F2 z) u
i.e. 4 x 4 x 4.$ j4 y" y1 Y3 n7 Q t: q) T: `
Weight any 2 groups [1st]
( ?& M$ O( h# Ythen you will know the heavier ball in which group.
% K2 p9 C0 o! x- O- {公仔箱論壇Weight any 2 balls in that group [2nd]. j1 o5 J! {7 `9 W5 y1 y
then you will know the heavier ball in which 2 balls.
8 c& c9 N* ?& k$ |5.39.217.76Repeat again in remainders [3rd]( I: z1 L! y0 r/ J
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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