Divide 3 groups first.
: A2 O" a# i* l @7 n3 di.e. 4 x 4 x 4.5.39.217.767 X7 `3 l- y6 W$ _: }; Z
Weight any 2 groups [1st]tvb now,tvbnow,bttvb4 M6 D# N; T! l! g- o: x
then you will know the heavier ball in which group., o0 ]4 l, |- ^! U
Weight any 2 balls in that group [2nd]
$ s4 U+ Z9 I Mthen you will know the heavier ball in which 2 balls.
* u& z% B5 c) p( x# ?: i L" ?tvb now,tvbnow,bttvbRepeat again in remainders [3rd]5.39.217.765 ?# W, O* \1 M7 r+ w& x
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
| 
