Divide 3 groups first.tvb now,tvbnow,bttvb; O4 A9 W* n1 c6 |
i.e. 4 x 4 x 4.tvb now,tvbnow,bttvb0 E b$ c1 p2 U# m) \2 ?
Weight any 2 groups [1st]
* ~& T! g9 j; S, I5 vtvb now,tvbnow,bttvbthen you will know the heavier ball in which group.! d1 a' X$ G- ?- _# i, ]4 W
Weight any 2 balls in that group [2nd]- B1 a: R- M7 u3 o/ J; U* c3 a! B
then you will know the heavier ball in which 2 balls.
0 U( `6 {) y, `: ftvb now,tvbnow,bttvbRepeat again in remainders [3rd]
* K% K U4 x) VGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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