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* y5 g, A# f4 v7 p# H

3 K; u) k4 ^& m. f& s' |" x『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 f! L- r  F4 p, ], c& @) X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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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
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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:) g: {7 _' E! {; j' u0 {; ~! L' m
相信e條題目都有吾少人玩...

8 E- J* L# H! f2 _- i- w我以前畫左個chart去答,
2 A& l7 {1 h. K. @2 q( C, `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。
* r7 H2 l/ L6 M. C9 R4 B# m0 h13.........- x- ~, O9 U( L4 k# o

# e, C2 E% e; o( e0 E1 Y3 l[ 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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* ~& d- M) |1 w% p8 `% D! N我以前畫左個chart去答,
- {2 C0 d4 f- N% P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:" X- Z! Q1 `6 \( M( s
唔識隱藏...已經諗到..

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sor !!!....e加改左5 {1 T1 }# M, Q
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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2 X  ~! O4 S5 v! f' l
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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:
8 A% o; I1 Q4 o相信e條題目都有吾少人玩...

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: a. Y5 z5 I; H" J% mPlayPlay, Let me know later who has the right answer and I will add points accordingly.$ [- T* V8 y( K# u- g2 c
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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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Thanks

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( R" b/ N$ ]( F3 O3 I% k不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
" V9 j! b7 C8 \) ~+ G; c/ E6 Z1-6 vs 7-12) m& |, `, C1 E# J! e
if 1-6 = 7-12     13 is fake! r9 j! u) ]' s4 R$ h
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if not
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* G1 C6 ]8 w  M+ x, fWeight the 2 time
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2 l% v& t" M) j: a) e4 G# SSuppose 1-6> 7-12
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1-3 vs 4-6 + @" G3 h' x/ _1 m. j

6 M1 P3 V! @+ c7 J. j. Y. EThen Weight the Third
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0 \0 r( B  ~) r- K+ D3 }, C( ZSuppose 4-6 > 1-3/ ^$ M- {$ M4 p4 w  K) l( V) z' G

, p& U4 k7 t7 e0 x# c! fJust like the first Step
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" a: V; N& n+ z8 I; U  U  h! D4 vs 5 : l! G0 |, z, u1 R

1 t( `; n" t- p* }3 b* C& Dif 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
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Group A: 1,2,3,4
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Group C: 9,10,11,12
* b. `5 z% w8 f( w8 V  n1 R/ B7 BGroup D: 13
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  n4 |; J! A1 PRound 1" z- ^* m" n7 n2 Y* V" \3 Z
Group A vs Group B8 N  s8 U" v; J6 w0 A2 T
如A and B一樣, 即較輕一粒在Group C or D
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2 f. D4 P# S/ w4 Q+ e& q# tRound 2
. v8 x. l- A- _/ M% Q' o: W再在Group C拆成:
; G. I, Q7 R4 D* ]. P, BGroup Ca: 9,102 w" B. ?. _9 g1 p
Group Cb: 11,12" @$ a0 l- ?) ?7 |( {
然後再秤, 如一樣, 即13為較輕一粒.* I8 m) m; D! B$ q* S; F( f1 a+ N

& R3 M; z0 t9 M7 O如不同, 即較輕一組有一粒較輕波子在其中,
# c3 @$ W( H1 [6 ^! k  L# f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
/ U3 W( L/ Q4 g5 K# |6 bRound 1
( A3 M8 d  O6 F( ^; m3 P0 `$ F1,2,3,4 vs 5,6,7,8 = equal  s3 i8 y6 z4 @! `

  Y2 _+ [& |+ K0 @1 x1 z& M1 kRound 2
. ?$ k! k/ _0 z$ E9,10 vs 11,12 = 9,10 < 11,122 y, p) J, y4 a$ f& n1 @+ `7 i0 ^

2 Q0 Y1 z% G2 a9 p) {/ RRound 3) ?% `3 W# H; b) n: n
9 vs 10 = 9 > 102 T! d4 {+ X, H# a3 c, i4 D+ I$ e% k
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The answer is 10.- J) Z5 j$ X; K/ R$ D1 \/ T# s' }
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e.g. #2 假設7為較輕的一粒
0 p7 H4 E% p% a+ hRound 1
: }3 O" l, H. G1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8  `) o: J; L' I

3 P6 x0 v# ^- o2 W1 sRound 2
, r* U2 a9 ^0 ~% v7 D" g1 W8 \" Y5,6 vs 7,8 = 5,6 > 7,8
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9 Q' K' n2 Z& D+ {Round 32 F/ H5 P) w8 T( `4 \9 `
7 vs 8 = 7 < 8
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, j) T3 Q3 `$ kThe answer is 7.0 x% p5 R" ~# n3 U4 D

. E+ \  n. n3 e5 N/ d3 {$ [7 }e.g. #3 假設13為較輕的一粒
0 J7 O+ k+ X0 LRound 1# z# K; ]; n% U9 [$ X- T. \
1,2,3,4 vs 5,6,7,8 = equal/ t) I# N4 j* H2 U% w* R" T7 N

* p  A' o8 h" z9 R- w! R; V( m% iRound 29 b: y* \# O7 e  F( z! W( n6 x
9,10 vs 11,12 = equal
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* H. z& N" M6 D, s# PNo Round 3
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The answer is 13.
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5 S2 l' O: B* d8 N# g9 J# _唔知我答得正唔正確呢?! , Q6 O  ?5 @# r7 ?7 j
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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) ]# S5 B1 z# ~$ G
if 1-6 = 7-12     13 is fake& P( Q! s% A/ A$ {& u: E

; }) u8 f0 h& v2 U1 u' c  |4 `if not
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Weight the 2 time 6 X5 K2 B3 ~% e

: G) A$ C9 S  C9 w5 jSuppose 1-6> 7-12% ?! Y3 H$ R/ X2 d' ~
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1-3 vs 4-6
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Then Weight the Third$ g+ t# s" D! v7 e, X
3.
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Suppose 4-6 > 1-3" x9 U  j0 ?  K8 s" I) A6 h) D

' u% w$ }0 [$ UJust like the first Step6 ]& v; U; Q+ O/ l* B! K# g; F6 a
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4 vs 5 + \9 j$ f; H; q! F  C& Z' D, @( T! B
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if 4=5 6 is the fake one
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, Z6 q  ]% R" {3 L# |# I: dif 4>5  4 is the fake one ' o/ i$ I- p0 d( T9 b4 B- E
and so on......................

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3 Y+ \5 [! [4 z3 Y* [* z問題第二步
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8 V) f5 l" A- D& M$ g, oWeight 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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你第三步点去搵 7-12 边一粒???6 p3 f) ^4 `" {, |0 e
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問題第三步
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Weight 1:  1-6> 7-12
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& ]8 d. H) B/ X* g# p. TWeight 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