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 Sorry, 海未歸, you got wrong again. both parts are wrong, what is 次品自現?? You still have two balls that |
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Sorry, 海未歸, you got wrong again. both parts are wrong, what is 次品自現?? You still have two balls that -- king - (15 Byte) 2005-2-23 周三, 03:32 (1052 reads) |
bocai
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头衔: 海归中校
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加入时间: 2004/09/10
文章: 420
来自: UK
海归分: 51457
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作者：bocai 在 海归茶馆 发贴, 来自【海归网】 http://www.haiguinet.com
Arsenal is losing badly to Munich......
Divide 13 balls in to three groups: G1 (4 balls), G2(4balls)4, G3(5balls).
Weigh No1, G1 against G2
Case 1.1: G1=G2 ie defect in G3. Mark 5 balls in G3 as a,b,c,d,e.
Weigh No2, (1 normal ball (fromG1 or G2) & a) vs ( b&c)
Case 1.1.1 = ie defect in d and e
Weigh (1 normal ball) vs d
Case 1.1.1.1 = e faulty
Case 1.1.1.2 < or > d+ /d- faulty
Case 1.1.2 > ie a+ / b- /c- and d/e normal
Weigh b vs c
Case 1.1.2.1 = ie b/c normal, a+ faulty
Case 1.1.2.2 < ie b- faulty
Case 1.1.2.3 > ie c- faulty
Case 1.1.3 < ie a- or b+ or c+ and d/e normal
Weigh b vs c
Case 1.1.2.1 = ie b/c normal, a- faulty
Case 1.1.2.2 > ie b+ faulty
Case 1.1.2.3 < ie c+ faulty
Case 1.2: G1<> G2 ie defect in G1 or G2. Mark 4 balls in the heavier group as a,b,c,d and balls in the other e,f,g,h..
Weigh No2, ( a &b &c &e &f ) vs ( G3)
Case 1.2.1 = ie defect in d+/g-/h-
Weigh g vs h
Case 1.2.1.1 = ie d+ faulty
Case 1.2.1.2 > ie h- faulty
Case 1.2.1.2 < ie g- faulty
Case 1.2.2 > ie defect in a+/b+/c+
Weigh a vs b
Case 1.2.2.1 = ie c+ faulty
Case 1.2.2.2 > ie a+ faulty
Case 1.2.2.3 < ie b+ faulty
Case 1.2.3 < ie defect in e-/f-
Weigh e vs f
Case 1.2.3.1 > ie f- faulty
Case 1.2.3.2 < ie e- faulty
* a+ / a- : means ball a overweight/underweight faulty
作者：bocai 在 海归茶馆 发贴, 来自【海归网】 http://www.haiguinet.com
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