Divide 3 groups first.
+ F7 D/ `) J- K _tvb now,tvbnow,bttvbi.e. 4 x 4 x 4.
! L7 x4 q q4 y7 \5.39.217.77Weight any 2 groups [1st]
2 f2 j/ w% @+ `then you will know the heavier ball in which group.5.39.217.773 Q9 J+ k& g& O, O/ i' ]7 L
Weight any 2 balls in that group [2nd]" G/ c3 H$ ]" Y; Z6 ?
then you will know the heavier ball in which 2 balls.公仔箱論壇# ?: U9 ~8 W" U2 N0 P
Repeat again in remainders [3rd]( F! Y }9 ?4 t3 L: ~/ x# Z
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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