take 4 balls as a group, 3 groups - A B C, }: u8 s, @ \. z
weigh A & B (ex. B heavier), S4 N% i1 U. T+ Z1 H
then weigh B & C (B & C same weight)
5 I, H+ J, R" S7 i, g. D- cto find which group has the weight difference and find out is it (A is lighter)7 r6 v/ A$ T2 b2 Z
heavier or lighter
4 J, b0 D7 b4 gthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
8 y, b, k- K+ t1 u1 e+ H公仔箱論壇measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
| 
