Divide 3 groups first.
+ d1 E+ }7 a8 @+ M% Si.e. 4 x 4 x 4. K2 j5 V6 a; N, t
Weight any 2 groups [1st]tvb now,tvbnow,bttvb1 y5 u' \" O- U* Y& v
then you will know the heavier ball in which group.公仔箱論壇* ?% m: P, r/ G! T
Weight any 2 balls in that group [2nd]+ `! u% N$ ]) ?
then you will know the heavier ball in which 2 balls.
+ i4 g, H* C: a公仔箱論壇Repeat again in remainders [3rd]公仔箱論壇! p; E2 A+ D: P1 `
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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