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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7 C6 ?  A; @5 v1 ]* l『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)。) o: f$ |1 I6 r4 }/ R- X' D- u+ y
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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. N9 A, j; T7 W- j# j" l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7 q7 l6 A- f* Q; z9 P

: ~1 Y/ E* v8 B2. 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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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
) R4 h5 l5 z4 [! v3 S0 `: ~  ?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 Q9 e$ X: ]! R等我搵下仲在吾在# D# z/ ~$ F" j2 w" s2 w
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
' c* o3 S8 k6 D/ E, z, v* x, g! ]4 L13........., r! d7 |" s# X9 ]/ U4 w

/ ^/ X# M* E5 \6 H[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:4 m& z6 G# G2 N  e! L; Q
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我以前畫左個chart去答,6 V: ]2 [6 M+ e6 |) q6 S% U' U
等我搵下...

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- ^- s6 i: T8 T1 J+ e$ q0 p$ t6 f# F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:& G7 o/ H- T, u. ?: x8 {
唔識隱藏...已經諗到..

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! _( W( j; |( Q6 v  Ysor !!!....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
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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:6 P, I7 b& C) ^0 P, j% ^
相信e條題目都有吾少人玩...

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) C5 A& Q1 F" A1 w( n* z/ xPlayPlay, 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:
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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: @6 a' V/ ?+ E4 TThanks

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  M( z* [  g* Z  J不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

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1-6 vs 7-12
- b) T+ x- `% q/ s* U5 X! z$ cif 1-6 = 7-12     13 is fake
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4 h1 u" w# `9 w$ w8 M/ ~6 {! ?if not
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Weight the 2 time : W5 a. \. Z: V) k% M6 U: |

' r( Q5 I$ Y8 z# U7 |Suppose 1-6> 7-12( R4 `" t* z, G- Z

, X3 A9 W% {3 E7 ~1 K4 p2 ]1-3 vs 4-6
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  E3 d: }! s' _, DThen Weight the Third
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1 d0 _4 K, Y$ ^2 {4 K; p: CSuppose 4-6 > 1-3- A% X5 W" f: q0 r: g: {: r, f

7 ?" B& Q4 s1 CJust like the first Step
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5 X* o( d9 X* `3 g8 _4 vs 5
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) ]1 w  {6 _- X/ w6 aif 4=5 6 is the fake one
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if 4>5  4 is the fake one
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  L! h4 ^! d: j7 L* z. Nand so on......................

hello1997

分3組4隻波子秤& @8 `& H. l7 V' P
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Group A: 1,2,3,4& o- T6 z4 l4 r9 R: `
Group B: 5,6,7,8
5 [) e" V+ o" \* F8 CGroup C: 9,10,11,12
6 G: i9 X8 ~  p, M% eGroup D: 13& M' n1 f6 x0 E; Q: T

+ s+ z% J4 X6 L- _9 K, S" e+ cRound 1* M) M# L' ^0 d$ C% M
Group A vs Group B
2 T9 l% E1 e: F3 i( P" m, r1 e如A and B一樣, 即較輕一粒在Group C or D
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. F) Z9 N! R2 s8 j4 ERound 2& f3 b! o# `) c5 E. _) @
再在Group C拆成:
* s+ ~: Y1 O6 p9 u. w0 ]Group Ca: 9,10
1 C) J5 t9 W" r2 y, V/ wGroup Cb: 11,125 a: e9 z  z) M+ v1 i
然後再秤, 如一樣, 即13為較輕一粒.
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* X6 p! _. @: Y4 b! T2 F6 V9 Y如不同, 即較輕一組有一粒較輕波子在其中,
3 l" d1 c! O; ]# r* M" ~! }要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒
! f5 w& m. E' n6 I: U4 A+ F( zRound 1
/ ?* _) d4 y! N/ z  r1,2,3,4 vs 5,6,7,8 = equal- L+ j% T' w6 z1 p% Y' B
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Round 21 _' q9 G6 r  G6 A2 G* r
9,10 vs 11,12 = 9,10 < 11,12+ }6 T# ]& f1 e5 n/ W! @
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Round 3
. x1 e6 J' `( ^( ]- q3 h! v/ j0 K9 vs 10 = 9 > 10
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0 ^# ^8 }, C# e( jThe answer is 10.: K; [# M  W3 w1 c

2 K7 U) W. d6 J) E2 C, N" |# p9 Ge.g. #2 假設7為較輕的一粒$ W0 h% |9 i- @+ @  V, D3 G' ~' r
Round 14 l6 j/ S" o. I5 ~4 l  z
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 29 Y# F; @: ]6 E" ^8 T
5,6 vs 7,8 = 5,6 > 7,8
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( |0 j6 h% ]1 E! l* O/ e# G3 HRound 3* w) T; \  _8 D$ z: M1 L0 {
7 vs 8 = 7 < 8; p8 \+ \: I8 o! H; q' Y3 Y
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The answer is 7.
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& T1 F0 ~( Y% j2 @4 Ye.g. #3 假設13為較輕的一粒
" L# w& A; d  F- H$ ARound 1
$ Q/ N# e# A, G1,2,3,4 vs 5,6,7,8 = equal5 |$ z" X2 b; m: z( E

, p- W6 D5 e2 g% ^( Y2 e, u) ~4 JRound 20 G  d! `+ ^* a2 f" V
9,10 vs 11,12 = equal" A/ Z/ Z% a1 M; T
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No Round 32 R5 W9 k9 O$ r4 s" Y

. y# F5 b! \" s3 l9 ?The answer is 13.0 ]$ ~! x" K* K/ z4 [- ^( H

) A6 s* i9 t! _! P唔知我答得正唔正確呢?!
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6 W+ S  }' u" V4 o5 E2 A8 J[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:( ]# p: I2 x) R; R. _
1.
  Z8 v- Z. [8 c& _: O# f1-6 vs 7-12& G- ~, @1 z" j
if 1-6 = 7-12     13 is fake: J9 n: s) G1 ~; t0 o2 c

0 i' g/ e0 t+ hif not
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! a9 f, I9 E. PWeight the 2 time
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4 r' c, m1 J0 ?# ]* S6 |" DSuppose 1-6> 7-12  S" C& Y& S+ ^3 E; r( q" v5 h2 V$ x

& p2 @* W1 t: Q; z' c" u7 m1-3 vs 4-6
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Then Weight the Third
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7 |! f; N8 |' USuppose 4-6 > 1-3
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2 p/ w$ ?0 q+ ~; J! c' q) sJust like the first Step
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4 vs 5 * Y4 b$ o5 C% k: r3 m

% ?; r; z- q2 I: E* G1 l$ O8 Bif 4=5 6 is the fake one . h+ B/ L5 `3 {6 s/ y7 d
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if 4>5  4 is the fake one 5 q5 ~  _( g, N$ `
and so on......................

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6 S% E/ F% T4 h; w7 s' d問題第二步
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. V/ X7 I2 I/ o! f4 o. @5 p, AWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6+ I9 _6 A0 ~( X- ^8 B" p

( p6 |5 r/ p. A/ p你第三步点去搵 7-12 边一粒???
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! @2 K: ~# U0 ^% u7 X========================================5 B7 A) g) k) [4 R# i9 o
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問題第三步( _/ F3 M0 m* X  E' ~  `
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Weight 1:  1-6> 7-12. L2 B  l  V+ W2 _' S

( h. _# ^* P' XWeight 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