Divide 3 groups first.* Y) p- u& |! S7 ]2 T: ^0 @
i.e. 4 x 4 x 4.tvb now,tvbnow,bttvb$ z* Z# C6 {5 M6 ~, l5 P
Weight any 2 groups [1st]
! }: A( Z; w5 btvb now,tvbnow,bttvbthen you will know the heavier ball in which group.
6 q! m i! y& W9 }! o/ B( M* {6 ]tvb now,tvbnow,bttvbWeight any 2 balls in that group [2nd]
6 F! r& n4 e, n9 gthen you will know the heavier ball in which 2 balls.
5 f# W o& ^. q CRepeat again in remainders [3rd]
* R0 a3 ` R8 u. \ Z6 z5 `; {( UGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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