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5 I' y1 h7 F, X2 a2 r0 H+ J
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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)。3 J: u7 d5 ?; S& g% p- j
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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- b/ E$ M2 y: a( r注意:
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2 n. y; r( a! m) ]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2 i8 R5 ~' f  `
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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& r6 m% m; ]: Z# I5 p- J

/ J4 x! L4 {; R, I" m, T% g) D[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
! q6 p: t8 T1 g9 |相信e條題目都有吾少人玩...

% p: O2 @' i2 m! q我以前畫左個chart去答,
' I: r1 o; A) X3 ?等我搵下仲在吾在+ _7 h, X6 _* Q5 G, l

, }' M7 n7 [; q# ]' D2 }當日用左37分鐘答１２粒波子，差７分鐘才合格。- I) D, \/ g. m' l; j+ q
13.........7 j7 F' e* |0 p1 @. E) ?

* T1 L( _0 n' u9 S. Q# d7 o[ 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,
1 j& C: O" N& n7 w- H7 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:" z6 L. A' l& X% O
唔識隱藏...已經諗到..

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sor !!!....e加改左% I9 H! L( Z% O* Y3 m* W& H2 }8 R
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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:
$ s8 A) o* C( Z相信e條題目都有吾少人玩...

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5 A3 v, E* U7 b2 `8 PPlayPlay, Let me know later who has the right answer and I will add points accordingly.0 V6 P. }" f7 k. v: c/ s

! n% H7 q9 D. B, _9 O! A3 NThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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4 R9 K  c9 n/ C) j& [PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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/ k; W% |3 k1 u* L" M1 W0 Y7 HThanks

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) D9 G* n: S! b2 a' ~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
% i1 b( [& t" C- X! f- \if 1-6 = 7-12     13 is fake
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if not # m, P7 K4 f6 w, u* U

3 L: z( B, K0 a1 I) V! Y& OWeight the 2 time ) q, c1 Q4 E. ]  u* C/ s+ Z
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Suppose 1-6> 7-12
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1-3 vs 4-6 6 Q; X9 k. W% `1 m
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Then Weight the Third' T) e, B/ d: c' {3 e. u7 v: |
3.
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8 Y; N4 J5 g# q  i; ]Suppose 4-6 > 1-3  ^5 N9 P" G  m: M7 g+ a

8 W$ w# Q9 F5 ^/ o& d# u" J# cJust like the first Step# q$ x# `4 U# I& l% W3 D& R# `; p# B& Q
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4 vs 5 # w- Z' }! W6 C2 ~# S
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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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and so on......................

hello1997

分3組4隻波子秤4 W0 @% ^7 V, T3 C/ p
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Group A: 1,2,3,40 T& J2 k5 ~6 J6 k/ |6 I
Group B: 5,6,7,8( k9 ?' m$ j1 x6 P
Group C: 9,10,11,12
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Round 16 l+ t* ^, Y/ ?, p9 _+ @7 c
Group A vs Group B
+ b5 y* A% k: k+ S& v  F- k如A and B一樣, 即較輕一粒在Group C or D$ }4 J1 [2 j4 B5 x, w9 o

. ^, l+ O/ r! [% z, t) ]6 f' MRound 2
% Q8 \2 f: s, H3 x  {再在Group C拆成:
) A* }6 W1 W: K; h: n+ o. `Group Ca: 9,10
  D9 l0 x9 i) b% H+ p4 S5 ?% RGroup Cb: 11,12
& u  N( x8 f3 d然後再秤, 如一樣, 即13為較輕一粒.1 c" O/ N6 l+ T! G' |/ V# y- S

2 g9 G! j4 h  T如不同, 即較輕一組有一粒較輕波子在其中,
  C5 e8 g% U* @$ V- h* ]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+ a  c, d- W0 W% j% t0 H/ K& S
Round 1
8 f0 g' t; s8 z5 S9 ?1,2,3,4 vs 5,6,7,8 = equal
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Round 28 ^9 P- M7 k( c9 `; U, D6 w( H5 ]
9,10 vs 11,12 = 9,10 < 11,12
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) f7 Y4 R, `2 M" ?; I, ]; P  H+ qRound 3
4 I/ K! i$ c) m0 ^) P/ [9 vs 10 = 9 > 10
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The answer is 10.9 p( k% [0 B4 f  n# Q; \( b) I! {7 `

# h2 v" Q0 S( S  Z- Be.g. #2 假設7為較輕的一粒
* j' g2 ~( x; Z: M6 n9 P7 RRound 1- w, D; }- C3 s7 \6 J" w1 z
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 20 K" x: t8 H9 b! W6 k0 S
5,6 vs 7,8 = 5,6 > 7,8) Z) g5 H# C3 o& [4 T
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Round 3' Y7 i8 [8 A3 A+ s
7 vs 8 = 7 < 8/ f8 @8 B% g( a; J7 F+ `+ Y2 }
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The answer is 7.4 d# b4 e$ q* C, V; D
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e.g. #3 假設13為較輕的一粒
% k$ _2 M* q  |- fRound 15 d; E& R8 f8 |  D1 Y
1,2,3,4 vs 5,6,7,8 = equal
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2 E7 h+ t: G: g  ?* ?( G$ f# hRound 2* ~' a$ x) k7 T1 P3 ?" l, d
9,10 vs 11,12 = equal
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4 C% v9 Z, u8 S" mNo Round 3
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' ]* U( T; D# q: |: o( r& q/ MThe answer is 13.- D8 F& G7 U" d+ w. z3 B" j

; f% U" N, d# d6 F% d4 @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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8 n9 R0 z  a7 a. d7 F: B1-6 vs 7-12
0 `5 S; t6 o7 Wif 1-6 = 7-12     13 is fake8 R; E3 b, T8 @+ C  C1 Y: T3 [
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if not 2 F1 s. Q8 X# |+ g3 {

* n1 Y! b0 r4 Z" G7 Y- SWeight the 2 time . R" b3 }0 S6 x8 g+ W6 ^
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Suppose 1-6> 7-12, ~0 @1 c! p9 G) V2 X# W  A" k- y
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1-3 vs 4-6
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7 t/ o& K  |8 e9 LThen Weight the Third
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Suppose 4-6 > 1-3. N0 N& A/ i) g5 H' g2 U
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Just like the first Step
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4 vs 5 8 p' g* ]/ s% |

# D2 c) c5 W9 P! wif 4=5 6 is the fake one 0 B9 r5 k+ p$ |7 R) F) ^# ?: ^
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if 4>5  4 is the fake one # i  E$ B2 a" |
and so on......................

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問題第二步9 q( i/ ~0 d  Q. D9 i- G' W- z
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Weight 1:  1-6> 7-12
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8 N6 ~% {" a5 A& sWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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* n3 R+ P$ i, Z% e你第三步点去搵 7-12 边一粒???
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========================================5 ^0 x2 s4 J# l! E; A' F

% p6 @0 l: X$ J6 e8 Y問題第三步
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Weight 1:  1-6> 7-128 q4 B: K! u# }
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Weight 2:  4-6 > 1-3 : b. M# ]3 |' u1 t: _1 _1 o
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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