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: e# ~  D. {4 G9 D: [8 x
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『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)。
* \$ b( A. M  Q) R' 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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5 |% @! N  u$ s9 g6 j注意:
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# p$ d4 N& N: o9 u5 Z; \2 t& p7 ?8 `6 r1. 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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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/ C3 c+ J* v* P7 J6 f' g( ^
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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:! W: }$ D- {0 `4 @9 E3 `
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 o5 _$ |8 g; Y- m/ B
等我搵下仲在吾在& ^+ j6 `  p1 {

# }/ i$ }* y2 Q( A' N當日用左37分鐘答１２粒波子，差７分鐘才合格。) ^5 r* E0 V& H  q: ~
13.........
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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:( ]6 f& e4 @+ ~. n

/ E$ ~( }# O: w我以前畫左個chart去答,; H2 J4 _5 U& o! x
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:
+ p7 `; f/ `. |唔識隱藏...已經諗到..

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sor !!!....e加改左
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, T- I* {9 O# x; F, f2. 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& f7 Z) E  f+ u4 D
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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:2 z+ U. x, i8 W  L7 |
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:
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2 x$ \# Z" }+ D* G/ @PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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) R  b1 e) F5 F4 V; b不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
4 Q: p$ N: Z6 C3 m6 O1-6 vs 7-12- @3 _" U$ O$ I1 R! g* U/ U
if 1-6 = 7-12     13 is fake, Z: A# n+ [6 a+ W. I7 ]

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Weight the 2 time
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- ?# J* e4 {$ }Suppose 1-6> 7-12" y* A& ^5 C. y+ s7 U- r0 R- k( g

% l3 w7 G# L" M2 {5 c  |; p, V# R. \1-3 vs 4-6 1 \; K6 V+ Z$ G4 G5 N8 p( l  t' N8 j

; |' o5 Z8 P6 K" @5 e% [) P7 hThen Weight the Third  Q8 v0 k+ ~' k
3.
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Suppose 4-6 > 1-3
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# h+ O9 L$ S5 l6 aJust like the first Step; \, I3 i) K( [, F$ w

4 A% m8 _/ ?1 B4 vs 5 ; _/ v8 o5 e" k$ |) J
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one 8 c2 G9 {) Z: G& ~" x! H

, X, b  E; \, l7 o# `and so on......................

hello1997

分3組4隻波子秤: ^  S5 P: o( @$ t
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Group A: 1,2,3,4% D% a+ ?# N+ d9 u, |+ b
Group B: 5,6,7,83 D) {; m+ J  n2 Z) I
Group C: 9,10,11,121 S$ k0 ~  e3 H' I
Group D: 13' w6 |7 U; ?+ K# o, q' I: B$ h# A9 o
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Round 1
" K3 Z" \1 L$ N4 d' X0 X- @4 v& }Group A vs Group B& [! V' z0 y( V2 f/ B! h
如A and B一樣, 即較輕一粒在Group C or D
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# a, B, I6 D7 ^3 IRound 2
4 Q# \) A. x) H  A再在Group C拆成:& }( O- x* R; w3 P: k+ M; H, z
Group Ca: 9,10
( Y. o6 J- G' c+ C5 J. SGroup Cb: 11,12' w: C+ D( }) v7 C8 O6 a0 a6 q* J4 V
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,
  t& z7 `3 s* e3 e3 n要再秤, Round 3, 之後便知答案.
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* x" x# ~7 o$ \2 ?1 k8 [9 Pe.g. #1 假設10為較輕的一粒' J5 _6 s5 d2 l5 g
Round 1: b% g* u9 b3 n7 h& b' O. t
1,2,3,4 vs 5,6,7,8 = equal
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; K4 b3 M- _5 M. ERound 2) s% x! w, K& u
9,10 vs 11,12 = 9,10 < 11,12
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  t2 J3 a  w# R/ KRound 3
9 e! ~6 r+ [6 }; A* m9 vs 10 = 9 > 101 E" R/ `( M; u- Y

0 m$ ~3 U9 U3 B  M* tThe answer is 10.
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. k5 Y9 W0 i" t$ ne.g. #2 假設7為較輕的一粒- d0 V8 P" l3 G2 F3 B
Round 18 g, K$ K5 l$ Z! E' d" [
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2( A% y0 U& I) Z
5,6 vs 7,8 = 5,6 > 7,8
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* y( ^& E' [, r0 \! iRound 3- W" f! _$ s& [# z3 u' ~* j
7 vs 8 = 7 < 8) _. T$ C+ w* Q( Y: Z0 q

; J$ S6 E- J/ p* PThe answer is 7.. I  G9 j( J8 U8 X" Q* C4 C
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e.g. #3 假設13為較輕的一粒
; t& O& V; @  ~) n% r- _Round 1
* U7 R2 Z( j" Q. @1,2,3,4 vs 5,6,7,8 = equal
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Round 2
+ c: m1 S0 V# L, A9,10 vs 11,12 = equal
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0 Q$ z* j2 q6 k: d8 Y% S, VNo Round 3. W' T) m2 P# Q. `
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The answer is 13.  y5 W+ e- J9 h$ y- ?

# _" t: {$ d" S0 g8 U唔知我答得正唔正確呢?!
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5 B( z# T* s9 [+ C* S5 M0 _1 u[ 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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8 _' B1 z$ Z" P1 Z- `; t9 a7 M- M1-6 vs 7-12
% G, S3 d- U/ kif 1-6 = 7-12     13 is fake
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Weight the 2 time 1 D0 N3 Q& v: l& j: }

7 V) R, A% t+ G  S( o+ I& bSuppose 1-6> 7-12
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0 R3 S" R! f% |1 u; Y6 d# R( M1-3 vs 4-6 1 F* F; t! p* a; ]4 ^

4 x/ [4 i8 ?; k  _# oThen Weight the Third* L, L5 J; Y9 p( S
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Suppose 4-6 > 1-3
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- `& T4 b" S) J. IJust like the first Step
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; ]& U! @* H" ]8 s6 k2 h3 W$ ]4 vs 5
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2 A+ a6 \) `  [8 A, k) G) Wif 4=5 6 is the fake one - w2 P) a# ?) _+ d8 \
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if 4>5  4 is the fake one & E4 n' A5 a5 V* S
and so on......................

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) ~/ ~3 ^/ o) |3 i; M$ ^問題第二步$ X' v0 O! ?1 L, X. O

6 k/ \. C/ W  E( u( ZWeight 1:  1-6> 7-12+ M% k, B3 x* ~4 b% w
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6) i/ s  V: i6 E
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你第三步点去搵 7-12 边一粒???7 q, h$ u, `" K1 Z

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問題第三步
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$ B& Y- t! r% m- m; _# T7 M' W8 o2 ~7 nWeight 1:  1-6> 7-124 F3 s  n  x" [) o& A; B# P
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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