Divide 3 groups first.
- V( K- Z7 R+ r$ w7 Q8 N; }i.e. 4 x 4 x 4.
" |4 S4 _; h2 a8 ~ f1 l9 jWeight any 2 groups [1st]www3.tvboxnow.com% F3 u) g1 p9 o! {
then you will know the heavier ball in which group.& {. }6 t* f# O/ h) r7 v
Weight any 2 balls in that group [2nd]
& Z( k$ H+ ^$ [; _0 S公仔箱論壇then you will know the heavier ball in which 2 balls.4 f+ _8 ]/ x; g- G6 r& j% z* ]8 ` r
Repeat again in remainders [3rd]+ t8 Q( d# J; ^# ]. [
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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