Divide 3 groups first.5.39.217.77' K$ m) G- V( z! Q
i.e. 4 x 4 x 4.
6 u5 l. V ]# i0 ?Weight any 2 groups [1st]5.39.217.77- W0 {9 ?8 c8 ?* n+ ^
then you will know the heavier ball in which group.公仔箱論壇8 `3 B; L, Y; J0 O3 j8 _$ F0 p( ^" e
Weight any 2 balls in that group [2nd]5.39.217.77+ h% y) X- C: m* M0 T W
then you will know the heavier ball in which 2 balls.
# G4 f2 b B/ [ Z3 ?0 G7 h7 b! j" ~1 mRepeat again in remainders [3rd]
9 K0 F: A, r9 P% {9 l) z* KGot the heavier ball. |
發表於 2009-7-2 12:48 PM
| 
