Divide 3 groups first.
4 g) r W! k1 m" ki.e. 4 x 4 x 4.
1 p$ i# ^- V: h0 J8 T5 c+ Uwww2.tvboxnow.comWeight any 2 groups [1st], y! Z; E1 U2 {' a9 z
then you will know the heavier ball in which group.tvb now,tvbnow,bttvb; f. p3 ~3 Z" t
Weight any 2 balls in that group [2nd]3 F& }, n6 S2 ^. i2 T8 V& r
then you will know the heavier ball in which 2 balls.
M5 E: i2 P# o公仔箱論壇Repeat again in remainders [3rd]9 q$ q7 \- w7 ~. K
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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