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 B5 s! F, h9 _8 j7 f4 Q) _5 [
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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)。% t" i- }* W% }3 a/ P! `5 u
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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) ^. \1 M) W: ?# u# {5 d3 s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+ |( Q5 w$ m% w: {4 N
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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
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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 21:34:8 u$ ?, E* z3 f6 z2 e
相信e條題目都有吾少人玩...

6 u; K' b" n/ j) S8 [, C9 v我以前畫左個chart去答,9 q" K# L; r/ h
等我搵下仲在吾在- M3 Y  U6 f8 N2 q2 F
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當日用左37分鐘答１２粒波子，差７分鐘才合格。: e; A/ }2 m: h) e: A! K. M
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:# ~% X7 j) q- c5 F( |; @$ ]

! n, G5 Z5 |- v: {我以前畫左個chart去答,
: H5 ?0 d" K% H4 w6 o/ [) O2 r等我搵下...

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5 ~, D. D4 [% X9 i: u3 z( _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:3 L% j6 G0 i( ~6 f0 I0 S- o8 H
唔識隱藏...已經諗到..

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sor !!!....e加改左3 z7 ?3 b& a4 [+ X
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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:
5 c. L% A# P1 P1 E! Q' S( l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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6 l; m) }% O+ |$ k+ h5 O9 QThanks

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." f( c2 ]5 W- v+ w1 D( G

7 |9 Q  x% U( Z/ uThanks

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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 T: \. C1 o, [. t! }' v
1-6 vs 7-124 |( @% k8 G3 z" t* `" e  A% m- F8 X
if 1-6 = 7-12     13 is fake) H! ?  l5 q, K. [% `

; u- E% ]7 M9 Q6 H) O0 n- xif not
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Weight the 2 time / e- q# a& q5 [

" T, F3 Y# Q, M$ b# F4 `* xSuppose 1-6> 7-12
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$ X0 `- a3 D2 g1-3 vs 4-6
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Then Weight the Third: D  y, W5 F: v+ H7 Y2 S
3.: I5 C" x  Z$ }9 n3 |" I$ f  n

7 z  N1 ]  p# F( ~Suppose 4-6 > 1-36 i' A5 r7 O* g# r- K1 G

9 ?" A+ A3 L1 {8 v$ K, ~0 a0 KJust like the first Step
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4 vs 5 # p7 W' g2 F7 r0 o

$ D1 }9 |, i+ M/ yif 4=5 6 is the fake one 9 ]/ E* B% `" X5 O

8 T4 P3 k7 d' a3 Y8 Lif 4>5  4 is the fake one
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9 P6 E; C' i# D* g, t  oand so on......................

hello1997

分3組4隻波子秤, W; N/ z8 q6 u! `* u4 U; w8 g
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Group A: 1,2,3,4
1 o7 [7 z7 e) g* f$ {. }, |$ fGroup B: 5,6,7,81 F2 W- Y. d  `& b) P% {2 q
Group C: 9,10,11,12+ `0 I( t2 D' g2 K+ f6 O
Group D: 13
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; N& q  g/ }9 s0 W' O) bRound 1  b( c- P6 w, _( R
Group A vs Group B0 g- W8 M9 z+ A
如A and B一樣, 即較輕一粒在Group C or D
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! |4 V/ j: x' lRound 2/ v# z7 m1 O% K1 M5 B
再在Group C拆成:! e6 L8 O9 c: d# ]6 |# e/ E* M+ _8 Q
Group Ca: 9,10; }& B% E+ C4 [
Group Cb: 11,12: t9 e9 _4 J4 c. z- e7 W4 L
然後再秤, 如一樣, 即13為較輕一粒.5 Q+ G6 u" F8 E, |- [4 J1 ]

0 V4 O  g' P2 L' I4 n0 {; ]$ z6 H4 R如不同, 即較輕一組有一粒較輕波子在其中,
% X3 a6 a/ W7 b要再秤, Round 3, 之後便知答案.
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  V) U- Q( f+ T7 u2 T1 K, Y3 ke.g. #1 假設10為較輕的一粒0 i: d# r+ r0 X
Round 1% o( ~* Q, j0 P# I; f
1,2,3,4 vs 5,6,7,8 = equal
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9 l& U, U) i. P, l% oRound 2; _% K8 b% |9 y+ B+ C3 k
9,10 vs 11,12 = 9,10 < 11,12
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! k4 n0 M  d8 IRound 3) O2 W. S# E0 H& u  ]4 T8 }2 A* p
9 vs 10 = 9 > 103 C4 P- z/ A# j0 o' Z8 Q) K9 W. V

, v( e2 t! z) t" zThe answer is 10.1 R, ?, B# N$ m' y

% M, m8 P2 y+ y: I( E+ t. Ge.g. #2 假設7為較輕的一粒
  o% H% y5 I0 lRound 1
; c1 D3 }3 N1 J' h. S  \, W/ i1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 24 k  \) }( J5 K
5,6 vs 7,8 = 5,6 > 7,8
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Round 3$ v+ d4 V3 z+ t# J* }( f
7 vs 8 = 7 < 8
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% z5 M* x6 n( u% c; \, I. PThe answer is 7.* M1 F# j- f3 K7 m; C: w' d$ O

0 f9 o# b8 g4 w# ye.g. #3 假設13為較輕的一粒0 s6 w' B* Z+ l- i9 j
Round 1
! Q- E! T5 e* l& Q% ]. H1,2,3,4 vs 5,6,7,8 = equal
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% D$ t) b+ \  p  @; e' kRound 2
( u3 h! [" E' M9,10 vs 11,12 = equal
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No Round 3
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1 z% {6 U: @: u+ N2 W1 j3 BThe answer is 13.7 S5 h$ f  T* n& b2 _

, k8 C- |+ R7 ?7 W6 A9 L- S9 X唔知我答得正唔正確呢?! 7 v& I& p% }. `
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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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2 x: W3 I0 f! M" p6 R; H# h# s1-6 vs 7-12/ x. x9 w% W' `8 Z! \, j! X# o  X
if 1-6 = 7-12     13 is fake4 a7 V) |# n0 c* b) y6 t5 ~2 J
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if not
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Weight the 2 time
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Suppose 1-6> 7-120 x* w# z7 e% t6 `% x) j

" u- }  Y" {8 W9 D; z1 M3 `1-3 vs 4-6
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Then Weight the Third1 s2 j2 Q2 D0 q3 @. S
3.2 p$ q( S' U) M! S/ P0 _( y( A

9 H% z$ j# o) P* {& z/ @# NSuppose 4-6 > 1-3
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7 o" |3 s  M6 A4 `9 V1 MJust like the first Step
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4 vs 5
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* s1 O, \3 c( O. B% U" oif 4=5 6 is the fake one 6 g* k+ H2 K, H

7 {' B' W6 ?3 D3 ]8 yif 4>5  4 is the fake one ; T1 z- Z, L3 i8 v. T1 o
and so on......................

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# n% W1 a* u$ t) i問題第二步0 K9 }# Q9 k5 G) a4 W1 a2 p& t  o
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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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8 q) L6 q9 Z- }! ]: s& |) Z5 u- l你第三步点去搵 7-12 边一粒???
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========================================
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! i: {0 x7 K8 y問題第三步
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Weight 1:  1-6> 7-122 v; T0 U- L! g2 t

- @) N* J" t, z, Q, @- s/ UWeight 2:  4-6 > 1-3 ; G( R5 M) t  u: 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