take 4 balls as a group, 3 groups - A B C( M+ A; I9 J5 w4 s. [0 j* _- {
weigh A & B (ex. B heavier)tvb now,tvbnow,bttvb8 T; K' f6 V" S
then weigh B & C (B & C same weight)2 H; t% j I7 g0 `; @$ h
to find which group has the weight difference and find out is it (A is lighter)
, j7 l. o; ?/ L% \1 w1 ?# b$ rheavier or lighter
2 n- M9 D/ O3 X8 Dthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
/ v: c8 u% c, x. d$ }公仔箱論壇measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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