Divide 3 groups first.
, x9 a8 X1 X3 {$ o5.39.217.76i.e. 4 x 4 x 4.
; j2 N/ g$ t( M! F# G5.39.217.76Weight any 2 groups [1st]& j' [& K& u3 o; @! ?2 D) [
then you will know the heavier ball in which group.公仔箱論壇5 Z" @) E+ q& `" d1 f
Weight any 2 balls in that group [2nd]/ ?5 C8 R* x+ Y1 \
then you will know the heavier ball in which 2 balls.5.39.217.76& f, b% j- Q; q5 w, @
Repeat again in remainders [3rd]公仔箱論壇- @8 T# W& D z0 \, m5 A" G
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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