take 4 balls as a group, 3 groups - A B C" s/ z& B* g" f4 ?
weigh A & B (ex. B heavier)公仔箱論壇9 `0 m/ B; r6 N$ D o" C8 C! F
then weigh B & C (B & C same weight)5 x3 f. U, K+ } }- Y
to find which group has the weight difference and find out is it (A is lighter)
' l( e: f" j0 G8 [6 J8 Wheavier or lighter( H: v. m5 V$ f, K$ H
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
% A% S$ H \7 N2 Dtvb now,tvbnow,bttvbmeasure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
| 
