Divide 3 groups first.2 T" y2 A/ t: `( U
i.e. 4 x 4 x 4.tvb now,tvbnow,bttvb$ j t- k1 Q1 ^% w* S
Weight any 2 groups [1st]* y- l+ ~2 j. `1 Y( C& J
then you will know the heavier ball in which group.5 |; Y5 A& H0 B. [
Weight any 2 balls in that group [2nd]tvb now,tvbnow,bttvb9 M, j; q4 w' W# }4 W
then you will know the heavier ball in which 2 balls.
' Z0 x/ A( p% h8 {tvb now,tvbnow,bttvbRepeat again in remainders [3rd]www3.tvboxnow.com% I" a: c! I! R v/ a( {7 u
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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