Divide 3 groups first.公仔箱論壇: C& R# e: E- W U; m; f9 c# G0 A& P
i.e. 4 x 4 x 4.
; U1 m3 G- i0 P6 P. K5 _" ?os.tvboxnow.comWeight any 2 groups [1st]
' Z4 n J2 B J$ b+ Ktvb now,tvbnow,bttvbthen you will know the heavier ball in which group.3 {( O/ y4 k- K5 |
Weight any 2 balls in that group [2nd]公仔箱論壇1 c# P k* a" b3 I: |
then you will know the heavier ball in which 2 balls.
) z0 o8 { k$ W6 `% @+ z. {& {6 Mtvb now,tvbnow,bttvbRepeat again in remainders [3rd]
' `) m4 c- q6 h: P, t) I3 vGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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