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6 d9 D( u) V& L0 _2 c

/ g! l* h) V8 \& r+ d( s9 S+ m『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)。. Y& p1 X  B3 O. M
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？』8 ~1 F5 B8 j! I' J* v

* d9 m3 t0 p1 `9 ?, i9 D  R( t注意:
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# }) t5 H" B+ G9 a5 f6 P1. 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
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# {& h5 o% O7 S* F# T9 F6 v" I5 |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  , hide 字要連埋 , 內容 = 答案/ n6 p; a% J6 z1 L2 r% _( B; ]
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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:3 A5 J2 n  `# N* T* ~) w. Z
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,, S( J5 S, N, B" b. W
等我搵下仲在吾在
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$ f- V' Y/ J, y: z! F: l9 k  D當日用左37分鐘答１２粒波子，差７分鐘才合格。
7 Y! i4 m4 u* k2 }13.........
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8 z+ K9 O3 @+ l- e6 X* J* P3 a[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:
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我以前畫左個chart去答,
+ t# ]" F& i" @& `6 i( z5 d  O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:1 C" p" p0 V1 m! n, a6 u9 E+ E
唔識隱藏...已經諗到..

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sor !!!....e加改左: h8 ]! ~5 H% \

  y, y! \% H0 X% q0 V* B. ?" Q2. 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4 V% ]3 K" I0 X. C: n/ P3 Q
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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:' b, K% }# `: \3 _/ w8 n, K
相信e條題目都有吾少人玩...

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% j# ^3 L  D5 H8 D$ t5 l: WPlayPlay, Let me know later who has the right answer and I will add points accordingly.1 k8 ?: ^8 |0 g! Y" b; }% q& W3 u. P

, S, Q; I+ J5 P, q" GThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.4 P$ Y; l# F! K7 s" f
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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

1.7 x& j( T1 t/ H' N! Y' `
1-6 vs 7-12) F9 K# x4 U$ M$ g! P. K
if 1-6 = 7-12     13 is fake
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6 E: {; r% Z+ tif not 5 }  I3 ?. S+ D8 z$ f$ ~5 @* w

! R/ S' D7 i) Y2 ~4 D4 j8 kWeight the 2 time
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$ H' v% h" Q4 h/ q  ZSuppose 1-6> 7-12
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* y7 u3 F5 N; }; k4 p8 Q3 k1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3
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! p, O: V4 V+ _Just like the first Step
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6 I, C& T$ [: l  E& J. K8 F+ ^4 vs 5
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if 4=5 6 is the fake one % D: d/ U7 V( z2 _! s6 }: H
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if 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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8 T5 O2 {- g. n% \Group A: 1,2,3,4
- C$ w  [3 q: h' \. AGroup B: 5,6,7,8
8 ^$ ^( D- w$ n3 V4 k) ]Group C: 9,10,11,12
  C* d$ _- b# `* \2 B- CGroup D: 13
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Round 1
% L% I9 t7 C/ O/ k4 q" iGroup A vs Group B/ N$ b% g4 m- m$ q; r) C! f& G: Z
如A and B一樣, 即較輕一粒在Group C or D3 K* t  F: ]4 g5 {

6 d6 ]. ^9 q. Q* tRound 2
2 V# L  g5 M: O: q( `% D再在Group C拆成:
" H+ u/ A0 c, tGroup Ca: 9,10- }/ z) @/ ^5 p1 e
Group Cb: 11,123 s5 P4 W/ V! ]; j* m# D
然後再秤, 如一樣, 即13為較輕一粒.9 B/ L" t8 f9 [* B- ~! y/ E

( M: w7 ^  Y8 P如不同, 即較輕一組有一粒較輕波子在其中,
9 q$ V4 y" t) x( S6 y" u0 ~5 W要再秤, Round 3, 之後便知答案.6 s0 I$ g6 B; n6 ^. y) p
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e.g. #1 假設10為較輕的一粒5 K/ O( h0 W# j/ J  T( q' e& K
Round 1  @! D. e$ s: s$ f# _
1,2,3,4 vs 5,6,7,8 = equal! E; X' s1 `4 o. a& b) a8 K

' Y8 M9 v% O# i  @2 j7 \Round 2% X" L* u$ j/ Z+ l! ^3 ~
9,10 vs 11,12 = 9,10 < 11,12
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& y  s8 |! `; rRound 3
3 {4 U$ @9 j, L7 c' o1 f' N9 vs 10 = 9 > 10
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The answer is 10.
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e.g. #2 假設7為較輕的一粒
7 ], k2 _& W9 t& d3 P2 tRound 1
  a% p5 V+ P$ E7 e; h& m1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2  @* E+ H  R0 Y
5,6 vs 7,8 = 5,6 > 7,89 H1 U. Z" l7 r& J3 ~' P) n
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Round 3; e+ i1 W% U# n5 H: `/ ]
7 vs 8 = 7 < 82 v5 Y, R4 L4 H- h' b4 ?
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The answer is 7.
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2 B8 A; w' I8 `e.g. #3 假設13為較輕的一粒
! f2 F3 O- v9 R) k/ f( }  vRound 1& I; q) ~* ?8 ^
1,2,3,4 vs 5,6,7,8 = equal! x  z4 c6 w2 ^8 k! s) V4 \  y  m

# J  [- Y; `8 m3 C# oRound 2& ]' K3 G4 ~: ~6 e5 s0 a) g! l
9,10 vs 11,12 = equal
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No Round 3
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. ~, }8 m/ f" u, E+ FThe answer is 13.
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; N  B9 J) M& k, V& Q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:/ v& f) K& E  @: S
1.
+ ^2 x" J1 b) p8 O: y/ _8 s4 n1-6 vs 7-124 [2 K7 X; B' M
if 1-6 = 7-12     13 is fake
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if not / U; d, A/ D. y. C( a) M
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Weight the 2 time
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3 k2 E# D5 H5 V7 wSuppose 1-6> 7-12
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, r# i4 S/ o! l& G- D8 U1-3 vs 4-6
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Then Weight the Third
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4 {, L2 x. @, ]Suppose 4-6 > 1-3# s; G$ M6 w, d' q: p' q8 P

2 K% j+ U0 h* XJust like the first Step
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: a9 x9 h! v$ d& s; P# K4 vs 5
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0 Q- E. \! h) Rif 4=5 6 is the fake one 1 }! E& t5 n( A5 w, y7 V5 p1 |

/ r' R7 A5 c: a/ @if 4>5  4 is the fake one " P' j) L9 ^( E
and so on......................

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1 G6 m7 w# w" _3 M2 A  h( N問題第二步! v$ c; o  D1 t; ^8 C/ n
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Weight 1:  1-6> 7-12
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Weight 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???" `4 a9 V4 B, Y/ v" s4 K1 k. k
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" @5 X6 l2 Z! U9 m; P- g問題第三步6 |$ h# L0 Q9 Z  }

* g: R6 I. L1 FWeight 1:  1-6> 7-12
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% `4 _* C% _  [: C* V; }Weight 2:  4-6 > 1-3
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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