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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" ?5 W+ Q3 \+ s' G2 J% }% \1 Z  W『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)。- }# v% D& Q" P- s
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？』% J8 `: M2 F$ a/ p: u
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注意: , \8 |* R8 _5 ?6 B+ U
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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
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6 G3 u3 c) c' H5 N6 I, }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
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# n: W0 g' f$ u4 f2 v[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:& S0 o7 h+ n$ W: \7 m4 Z9 ~5 w( o2 C
相信e條題目都有吾少人玩...

, ^  K4 d0 c- w+ g. \7 }4 @6 W0 {我以前畫左個chart去答,
- p. z* z2 u6 d5 A' \- y等我搵下仲在吾在
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
7 o% i* E6 d# D13.........
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[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:$ @% u7 L1 L& p9 Y. {
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我以前畫左個chart去答,% f9 @" W, {( V& Q: y: O) F
等我搵下...

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9 {7 o' s% j7 C- K) ~/ j1 l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:
  W1 n" V  N2 h. M4 Z8 _# n. e1 ~唔識隱藏...已經諗到..

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sor !!!....e加改左
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/ P: ?/ P# ~" ?3 B. r/ \% I5 v2. 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:* ?1 G- z5 m/ L- g, v% W$ ~
相信e條題目都有吾少人玩...

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) F! e: o8 w* [PlayPlay, Let me know later who has the right answer and I will add points accordingly.) i& E3 f3 d2 O# y
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:7 t* c9 }4 ?* r; q. g) j; ]

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.& Z( J9 a: z1 C& O

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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.
& p! p; Z) @; q) ~( z, h1-6 vs 7-127 _" h! O2 N' Y; Q; G7 Y' }1 t2 N2 x
if 1-6 = 7-12     13 is fake+ o$ i* @; S- W. F; {( k: {

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( u; d& V) f" G0 c: F! E, ^Weight the 2 time 5 ~$ l% i  d5 w

7 p& n9 }. X, @! t3 BSuppose 1-6> 7-12* |2 n2 o  x# ~, s9 p, w
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1-3 vs 4-6
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7 q" e" ~0 L1 a) SThen Weight the Third
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Suppose 4-6 > 1-3: ^- @7 z0 [. P% l0 E$ ~

8 Q7 g' q6 m- `' D' uJust like the first Step
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4 vs 5 ) j; m6 ^0 C5 u) j2 _
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if 4=5 6 is the fake one
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: a& c; T2 d# f+ U$ u9 @+ C8 [2 iif 4>5  4 is the fake one . D  O2 B; Y' _3 d: J$ k. e

% I, T: U3 Y, n0 i8 p$ L* i4 Mand so on......................

hello1997

分3組4隻波子秤; D3 o7 f! p) V  p$ B

  r* f* I8 r. r% n9 Z, kGroup A: 1,2,3,4
$ ~. e! @" I8 F# I4 R9 EGroup B: 5,6,7,8
1 w+ f8 d  q! K& p3 [7 Q6 j; _% eGroup C: 9,10,11,12
! Y$ h6 N' o$ z! L- {Group D: 13
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Round 1
; w( }7 Z3 l: J7 DGroup A vs Group B& s! C( t' u1 @- }/ x
如A and B一樣, 即較輕一粒在Group C or D  l& A  }" g, _! f! F
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Round 2( w; C: h6 W! J/ ]7 G$ Q7 z
再在Group C拆成:
( C# K" u" R+ kGroup Ca: 9,10
, t2 w% r6 g+ E  ~/ Z) B; AGroup Cb: 11,12
* X: l) e$ k0 {) q! [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,
( c6 `9 A" u9 F要再秤, Round 3, 之後便知答案.7 a0 M1 r, E) j" g+ T

. n6 Z" F2 f" b; @2 b- M5 _0 p% se.g. #1 假設10為較輕的一粒
- a4 ?1 V2 A0 ~% H3 i8 F; iRound 1
+ _' D! N8 \5 R/ Z  l1,2,3,4 vs 5,6,7,8 = equal
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7 J4 p9 T- a  Q% ?Round 2
2 P, c$ I+ n  U9 U1 t" T9,10 vs 11,12 = 9,10 < 11,12
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Round 3
0 w9 p& _0 a  C6 R$ S" R9 vs 10 = 9 > 10
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( K+ p: |5 o0 T& rThe answer is 10.
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e.g. #2 假設7為較輕的一粒
9 l9 }6 O1 e4 LRound 1
3 P( {- Q8 j4 w0 V. ^1 Q: d1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
9 W. [: b& Y1 C9 N5,6 vs 7,8 = 5,6 > 7,8
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& }6 s  j# l& T: vRound 3
1 N" W' D, M, b2 _. ~! U! i7 vs 8 = 7 < 8
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1 P/ @0 U  n) IThe answer is 7.1 V1 u. u, {5 ]- u7 d

* K: n7 H; N& `4 p% A* C* @, `e.g. #3 假設13為較輕的一粒5 Q7 w( [6 w' N" j4 n6 V/ `% J
Round 1
! F9 ?* x8 @3 M* [- `( W+ O* c( ?5 u1,2,3,4 vs 5,6,7,8 = equal- ]' [- g2 H4 f. B3 K) `- w

3 ^: m- ?8 N1 H7 eRound 2/ D- j' V" h. z
9,10 vs 11,12 = equal
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( c+ H1 J$ O- S7 c- q7 BNo Round 3' l, J( f5 {6 w4 x; M
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The answer is 13.( T/ T' k/ i5 v

& s1 x6 p1 @2 q  z- v& t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 7-12
9 Z' K0 n& @  i' Z" R6 ~  I6 Aif 1-6 = 7-12     13 is fake1 }& s% a3 w; C  L* Y
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if not
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Weight the 2 time . Z% N3 f4 i$ r: l7 u; a) H2 C

; ?) P# B* l6 p; fSuppose 1-6> 7-12: P" p1 n2 J0 X3 M. Y
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1-3 vs 4-6 7 @8 F& m2 S8 s

" x- l' z9 }% r) E' n/ sThen Weight the Third
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# z3 [/ q3 r! H6 QSuppose 4-6 > 1-3
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Just like the first Step
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4 vs 5 4 p+ T: R9 c8 ]) o, W) h

, n& u0 e3 J- J# Nif 4=5 6 is the fake one
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if 4>5  4 is the fake one 4 i# z$ [$ Y% n( m& E/ X) t
and so on......................

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問題第二步
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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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' y5 O: h5 V/ A% B0 k4 a你第三步点去搵 7-12 边一粒???! ~/ F8 K& f3 H5 J0 \3 t! E

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1 K; J( a; e: ?) C+ O; z, g$ t問題第三步
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Weight 1:  1-6> 7-121 {4 q% q/ b7 w4 v6 j
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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