Divide 3 groups first.tvb now,tvbnow,bttvb1 B, t% b5 H) s6 |) |6 Q/ Y% z' V
i.e. 4 x 4 x 4.公仔箱論壇# }0 ?% q8 j5 ?+ {6 @; i7 v, W/ Y
Weight any 2 groups [1st]
; F; H' ?2 s9 x/ l* [4 T* a; Mthen you will know the heavier ball in which group.
, i! s6 Q& ]1 _- K& aWeight any 2 balls in that group [2nd]tvb now,tvbnow,bttvb$ O7 @4 `+ _& j9 `" D: {1 m1 S2 U! @
then you will know the heavier ball in which 2 balls.
4 z* @+ b6 O2 P& Btvb now,tvbnow,bttvbRepeat again in remainders [3rd]
; F9 g) [3 ]5 FGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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