Divide 3 groups first.公仔箱論壇4 N: h* [+ p5 s/ j* V, J
i.e. 4 x 4 x 4.1 O6 G* g: g! S' S
Weight any 2 groups [1st]* I3 g2 S6 W. h( ^& j6 B
then you will know the heavier ball in which group.5.39.217.763 }7 Z. u. v8 x- O' ^# C
Weight any 2 balls in that group [2nd]& j% Q4 [$ D" o3 X: w1 h: e
then you will know the heavier ball in which 2 balls.
0 t' Y, a3 t4 r$ _Repeat again in remainders [3rd]
- h! T& M+ ~5 ?/ j: v% V$ ^7 r/ H8 |5.39.217.76Got the heavier ball. |
發表於 2009-7-2 12:48 PM
| 
