Divide 3 groups first.5.39.217.77:8898" f8 t) Q6 c9 [
i.e. 4 x 4 x 4.
+ D7 y% V0 F8 w btvb now,tvbnow,bttvbWeight any 2 groups [1st]公仔箱論壇9 s1 i' B2 U/ T: F+ R. N* h X
then you will know the heavier ball in which group.
: ]& f! M- r2 g3 ~& iWeight any 2 balls in that group [2nd]
& E4 h" {4 S) U, ~* \then you will know the heavier ball in which 2 balls.
4 f3 w# f3 d. m! H& eRepeat again in remainders [3rd]
. [' C3 |- t4 ]1 f. i* b Y公仔箱論壇Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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