Divide 3 groups first.& K8 t" K) B$ W0 g, F. o5 K
i.e. 4 x 4 x 4.
- I- {+ \" G/ h7 l& iWeight any 2 groups [1st]
/ h$ M) E" ~" P/ E( ?: `0 Jthen you will know the heavier ball in which group.tvb now,tvbnow,bttvb( u. m* r. Z3 }
Weight any 2 balls in that group [2nd]
7 z; L8 n1 ^' X3 K3 Y. o5.39.217.76then you will know the heavier ball in which 2 balls.tvb now,tvbnow,bttvb. N/ m" a3 V3 g' ~$ a+ K: I* x
Repeat again in remainders [3rd]
7 q o5 g, F" R, j1 sGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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