Divide 3 groups first.
7 m9 C5 b) h O3 [4 M8 p, y9 n' w5.39.217.77:8898i.e. 4 x 4 x 4.公仔箱論壇 M% r* x# r; N4 Z4 I; i( W
Weight any 2 groups [1st]
( \; f) ]$ E* {: b5.39.217.77:8898then you will know the heavier ball in which group., b) E: W- N) X
Weight any 2 balls in that group [2nd]. ^5 e5 d ?1 C3 M# L
then you will know the heavier ball in which 2 balls.
; f# H8 w3 [* k8 i7 PRepeat again in remainders [3rd]tvb now,tvbnow,bttvb& ~$ Y$ d, p ^) E
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
| 
