推理大挑戰(第四關)

playbr2

相信e條題目都有吾少人玩過,所以今次一於改難些少.....由12粒波子变成13 粒波子......不過對於識玩既朋友,應該都屬大同小異既啫
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! J: D7 ]' E8 ]- J$ b『有 13 粒波子，有 12粒是重量相同的，有 1 粒是重量不同的 (沒有列明是輕了 / 重了)。
1 z+ C. J. R( t% ~! ^$ K; t# A現准許使用 3 次天秤。請解釋怎樣才能找出 13 粒內那 1 粒重量不相等 (即是重了 / 輕了) 的波子呢？』
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1 |& f# o# E% g注意:
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1. 回答題目時,波子的名稱代號請用使用 1,2,3,.......至13 等數目代表, 即1 代表1號波子 , 13 代表13號波子.....以方便查證, }+ h7 |" Q2 L6 y

" m0 T% i: y9 o# G% A; J2. 請回答題目的朋友使用'' 反白功能 '' (即係將D字既颜色改為白色,白色颜色在黑色颜色上一行,透明的呢)穩藏回答答案,費事比其他人抄  , hide 字要連埋 , 內容 = 答案
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7 p/ y6 v+ i: g# c  g0 s% ][ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:5 ~) f4 f. R  _& ~9 k4 K0 n% v
相信e條題目都有吾少人玩...

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我以前畫左個chart去答,3 I  w/ U% P. S0 Z- a1 f
等我搵下仲在吾在
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+ N% ]3 ~& W- D% Y: ]8 ~8 _- G+ H- l當日用左37分鐘答１２粒波子，差７分鐘才合格。
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, s/ z4 l7 F. g. V' G/ M[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:3 b5 O: d" p& ~, l
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我以前畫左個chart去答,
2 j4 Q# P( A+ e7 r等我搵下...

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記得穩藏答案

16749

唔識隱藏...已經諗到..

playbr2

Originally posted by 16749 at 2007-3-1 11:35 PM:
4 I3 ]" g4 Q8 w5 [. `唔識隱藏...已經諗到..

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( }  C* y5 c: v  k, l$ ]; q3 _sor !!!....e加改左
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2. 請回答題目的朋友使用'' 反白功能 '' (即係將D字既颜色改為白色,白色颜色在黑色颜色上一行,透明的呢)穩藏回答答案,費事比其他人抄7 H* s) {1 |: x% E, N7 i' G2 X
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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:# Q0 j! C, ?/ r- L+ {# }0 X5 r
相信e條題目都有吾少人玩...

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:9 N9 f8 p. ]/ C* P8 F: \/ x5 H' u
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: v4 v/ x4 B( D/ ^; Q' UPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
, {  o9 t! L- M. u; |1-6 vs 7-12' @1 V$ C- I/ D8 O! [2 Z. J2 ^
if 1-6 = 7-12     13 is fake
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if not ( w! K$ V' c# v6 n
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Weight the 2 time 9 b" Z2 G; k. S, |  }) i0 q0 H
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Suppose 1-6> 7-129 ?, a1 x# N) }9 m( K/ n. }
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1-3 vs 4-6 - l& x% n% X5 L9 a2 N0 ?. u3 ~9 |
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Then Weight the Third
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Suppose 4-6 > 1-3
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8 A% B) L6 P4 e/ v/ `Just like the first Step* y& b! F! f1 ~; M# \, g5 a
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4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one
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3 f+ M3 z9 k' yand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
4 y" T% h/ N( }6 b) v4 [Group B: 5,6,7,8* i: v8 e4 V. |
Group C: 9,10,11,12' Z5 Y1 I6 b; F( M+ b0 u% ^& B
Group D: 13) I2 }5 i3 p- v& p6 F' G

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Group A vs Group B
- L- ~4 \9 z6 b  R如A and B一樣, 即較輕一粒在Group C or D
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Round 2: q8 Q/ l# T. `! o
再在Group C拆成:$ L) s  G% G" g4 O
Group Ca: 9,10
0 j8 ]# ]$ p* y, }9 q- ~- hGroup Cb: 11,12% Q9 k! i$ [0 p1 \  S2 L5 T9 \
然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, - }5 R, N2 K% ^' h" C* Y
要再秤, Round 3, 之後便知答案.! q' v! E/ E3 C( d0 b! U

' h8 E. `% `% J6 z8 ?e.g. #1 假設10為較輕的一粒. o& U( S+ u2 \% F
Round 1
7 Z# G9 @; v+ t& W7 `6 Y* }2 u1 a; G1,2,3,4 vs 5,6,7,8 = equal
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: _+ ]4 V+ U1 V$ r3 fRound 2$ W" n8 S1 p# v& t3 e
9,10 vs 11,12 = 9,10 < 11,123 s, P8 ^$ v' p+ w- M

2 z+ y1 x5 p# c8 ]Round 3% f# n2 @8 d' [7 n* ^! t5 R9 X/ w2 J
9 vs 10 = 9 > 10, B& d+ V4 M( i
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The answer is 10.) Y/ U4 ^! ~5 w4 B
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e.g. #2 假設7為較輕的一粒
1 }$ }+ m; W2 Q6 i* L1 M# r  M4 iRound 13 X8 P( f8 e! M, D+ l4 c+ ~& l6 n2 h2 q! S
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8' W: t& w4 y* ?% w$ [' X$ A9 x3 U1 @" o
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Round 2' L3 o( q: @* s6 {7 t# I
5,6 vs 7,8 = 5,6 > 7,8
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9 a6 O8 Z) U( H1 ERound 32 y/ y4 @, b% L2 G8 Z7 ~2 b1 t2 `
7 vs 8 = 7 < 8& r' e+ p5 j( P6 z  M

* ~! H' Q  G& O, d# G! ?The answer is 7.! r' u4 I( f) y, o0 [

6 V8 R' h. v* Y3 r; l& me.g. #3 假設13為較輕的一粒+ \/ f/ J- a. _7 [& Z! M; Q1 V
Round 18 F7 K- n0 ?' t' @5 P+ {
1,2,3,4 vs 5,6,7,8 = equal, n; F  D& J3 ^0 I# W4 ~

/ c5 {: D. Z9 v6 g& ]Round 2" i% C# ~/ w6 f$ [( _' g7 e
9,10 vs 11,12 = equal0 X  |. j. a$ |: r
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No Round 3
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The answer is 13.1 v4 O$ `' ^$ Y& [

+ C" o% N; i  p4 H) r, n8 `唔知我答得正唔正確呢?!
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[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:
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1-6 vs 7-121 W7 C* _# M1 W
if 1-6 = 7-12     13 is fake7 T& S' z: v4 L/ n; E8 e# F

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Weight the 2 time ! F$ C% K/ {, \

9 V4 O2 }8 j* r6 f# ZSuppose 1-6> 7-12
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1-3 vs 4-6
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7 O/ V7 u' ~% W# ?! p  }) A6 e6 aThen Weight the Third
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: P+ t8 }- w' I2 c+ v- ASuppose 4-6 > 1-3
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; R4 C6 x5 K8 i+ Z  x6 m6 oJust like the first Step0 ^3 A9 R. F# c8 P+ n

4 |% C) }4 B% B  v3 O4 vs 5
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if 4=5 6 is the fake one , ]3 h# i3 K. [: I0 V8 c8 T
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if 4>5  4 is the fake one
2 q$ ]& \/ X( k0 qand so on......................

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問題第二步. n3 L  y% Q, S
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Weight 1:  1-6> 7-12
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: k5 D1 ]. a3 V. U1 ^3 wWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???) g% X: I- [" {$ F) P3 {9 O
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問題第三步: G/ t" V( Q/ c+ U

) h: s* O2 L4 P; c: Z. NWeight 1:  1-6> 7-127 @( p2 T7 Y$ }

4 @: f( K6 }7 g$ f8 K4 `+ Z2 v" jWeight 2:  4-6 > 1-3 & Y* V0 n$ [1 `' o; N
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你又吾知粒波子輕D定重D ..... 咁点解第三步只磅4-6 吾磅1-3 . 如果個波子係輕D ,咁4-6 就一定一樣咁重