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 J, S; w6 r; U4 c% _+ }
3 ]: D2 U0 K" g% m『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)。( K2 B. s- f& m  @, k
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？』
9 t& U8 R' Z: D- Z$ Y' s
/ z7 d$ @1 ]% F3 ~+ u! @: @: \注意:
" X  R9 Q5 \! ^" V: A
9 t) j  M1 N2 c1. 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
$ W6 X' l, b6 t" A5 J3 m; q9 m9 H
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
5 p8 b+ \7 _) _; N! o5 L8 Q% v, Y! i3 |; X0 N! n7 r
[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:$ s/ s/ H; [* `( V, Z5 ?* D
相信e條題目都有吾少人玩...

+ c, g7 H5 ?) u9 U9 X5 E+ |$ A我以前畫左個chart去答,
+ R4 A0 F% v1 }$ o1 \等我搵下仲在吾在
6 j" N3 ^  n) V" z! ~
4 R3 d( @4 ^, Z' V  q當日用左37分鐘答１２粒波子，差７分鐘才合格。
) q9 ]% Z+ @; U9 P. F/ F* o& K13.........8 N0 L. v$ e8 W

( i6 L8 P* z% M" J& c[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:" y, ]: m. {& {7 |* W: l7 Q; w

& C7 u$ M/ L: {7 w) c我以前畫左個chart去答,
; x5 q/ y  V' P; W% o) I等我搵下...

0 e- k5 u- \: o" ?6 \" J
: L& q$ Y/ b; d, u1 Y  y
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:
- `2 V+ B/ W& Z/ y& f$ K, I唔識隱藏...已經諗到..

" m/ A; i1 r" q4 I* J: l8 t! A1 t+ D# Q2 c3 Q, o# c( Y) i
sor !!!....e加改左
- w9 X! _. i  F0 P  w1 G# Y/ J  y7 W/ a9 `+ W+ q' Z- `# D; 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
& S- d/ X$ T) g5 g4 D+ \% g% Y5 K. l8 o3 z/ m" L$ t
[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:! Q6 E4 R! [) _3 d$ H
相信e條題目都有吾少人玩...

0 N8 e# m5 N! W! F8 T3 n

) n% ~' u1 K- |% k- p# ZPlayPlay, Let me know later who has the right answer and I will add points accordingly.7 ~9 C- ^, J& y% }4 Z4 L
6 n" r  h" L# g0 U- a9 I9 }
Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
! h/ x8 G& z7 l3 I6 q5 ~, M6 b6 L/ p# ~, {) D( Y9 d
4 J/ p1 N8 ^1 f( g5 v3 e0 ]
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
- x0 j" A2 F) c; P& n( V: P% ]; t- e/ Y# i' C# \0 o
Thanks

* K! t( [# ]" R3 R3 o. B& ]
" ~* S3 |3 A7 X+ m. ^$ D
不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
0 y! c0 U# O2 X/ R% o1-6 vs 7-12. ?, M* ?+ U, f' O' v# k
if 1-6 = 7-12     13 is fake
7 d, z! }/ ^; n) m4 ?: P  m
1 U' q% j! }  e* O7 d, n! @if not 0 J4 N* o8 k  d/ ]& Y; {' Z# t3 j

7 ^- ?  p2 S, P1 a% J. |0 FWeight the 2 time
' W3 q( D; K) F
+ R) @% U$ `6 o( c7 z$ P2 g9 Z: Z% ~Suppose 1-6> 7-12
& C7 s) h3 }  O, x' R
! t* @  {  S0 O5 B  y; |0 U1-3 vs 4-6
1 z  y. V7 }+ ]# P( n; y8 K; C% ^
6 J' v$ N" D1 E$ E0 D5 l( Y, XThen Weight the Third% r4 O' o- J+ V, z& J, c' V+ \
3.: I, k2 ~5 ?% h6 Z- v; i" l

2 z( X6 {+ Q! E  B8 r2 rSuppose 4-6 > 1-3
0 R4 N1 ^$ C: u* [- O* C- T+ V, i% h, M3 z2 ?; [6 ^8 Y
Just like the first Step
- H3 U3 u- v# j* r0 F
. ^+ t0 O% x) h4 }* E8 F% c4 vs 5 ' i* d" p: E! F

- V  n4 @; H) A" ^, f" P7 y9 aif 4=5 6 is the fake one 7 C" T/ Y, G. j' Y3 \

, c! Z/ d  |1 c) H: e0 x8 T9 }* f/ Iif 4>5  4 is the fake one
9 E! i, Y/ [/ ]# x
% `/ I1 K6 ?+ x6 X' @& s7 tand so on......................

hello1997

分3組4隻波子秤
/ |; k  n' r& O9 `( x) J0 F2 L! K: z
Group A: 1,2,3,48 x! A' [. h7 [
Group B: 5,6,7,8
3 s5 C) }: D* f6 B2 O0 I. `Group C: 9,10,11,12
0 T2 b5 Q$ N  w2 HGroup D: 139 F- c% {8 w) T, i7 P$ ^5 D0 J

: q# p7 n" H! N7 x) L# [  fRound 1
- @% r3 l2 s9 t' a& c6 ?& C/ hGroup A vs Group B
5 C# K1 ]: I  l: p如A and B一樣, 即較輕一粒在Group C or D
$ ]; Q# A; N9 e4 q( z3 B. O
$ `6 {* M" c" \- R9 iRound 2
+ z& c7 ^3 U" a8 x, w再在Group C拆成:
" N$ U3 f8 x) ]1 i! g/ ?Group Ca: 9,10, y4 ~# P5 k# f( o2 [7 }
Group Cb: 11,12
% B7 A: [- `3 k+ F然後再秤, 如一樣, 即13為較輕一粒.% z  o  d+ S8 ]# G8 E
* [# q' ^0 D; V) M! q- k
如不同, 即較輕一組有一粒較輕波子在其中,
) @+ y. c7 P8 u9 g: r, J% {" G2 N) W6 O( D要再秤, Round 3, 之後便知答案.. a) i1 W3 T& [3 g/ o2 i$ H- ~( J) l) v

6 ?7 \" Z+ D3 j3 \1 {e.g. #1 假設10為較輕的一粒
. G9 N4 @( u' e  u# J5 q% BRound 1
, L; D6 K: Y" W: Q1,2,3,4 vs 5,6,7,8 = equal& _" B, a8 F4 ^
; `9 b% |2 ?0 _
Round 22 y$ G7 o( U7 h" K5 \
9,10 vs 11,12 = 9,10 < 11,126 ~/ _8 J( I- H9 H: Q, n2 T+ A. I
; ~# p' T: P9 w& J
Round 3( G7 g8 {4 @5 l' b' N
9 vs 10 = 9 > 10
/ \  u# w9 Q  c( z8 |
, I$ s8 W, C' MThe answer is 10." t1 I+ ?( m" E+ ], h3 f: S

( r* J0 a; W1 p# t1 v( C) Ue.g. #2 假設7為較輕的一粒1 L# F4 _" _! k! N
Round 1
. S% j8 B* q  N! r2 |* f1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8# s9 e* |) n8 N; B" D

. l& O- ~8 H2 J8 XRound 24 s) e" T$ d/ A1 f1 u3 t' e5 x$ v
5,6 vs 7,8 = 5,6 > 7,8. `. u2 s, o, o4 w1 I+ S6 _! q

( r7 N# V0 E% Q+ F6 r, RRound 3
5 [! _( p& L5 D$ y7 vs 8 = 7 < 8
" k8 L9 Q) F% T* I6 N: r7 S: Y) h0 M# a! Q6 u# R* u$ e
The answer is 7.& }- `8 R7 ]8 j4 ~* m" v% G
3 n0 M4 T4 G4 m
e.g. #3 假設13為較輕的一粒4 G$ r+ N( R2 ^3 Y6 L+ u6 y1 @
Round 1
6 t# P* `) O8 Q; z; ^  ]1,2,3,4 vs 5,6,7,8 = equal( v  \$ u/ E" F: H

  H2 E) o3 e8 j$ T# n( S$ hRound 2
5 Z  u: H2 }3 A4 a0 K  t9,10 vs 11,12 = equal  O' f! K8 E' C# d$ i
; ]. `* V, N/ a2 O* H5 z8 c7 r
No Round 33 V7 _6 Q+ i  h0 q5 s
# i/ V5 y8 K% i) {( b1 h
The answer is 13.+ n* @% Y9 ~, B: l2 g' e
- ], u+ u3 A0 I5 x1 `- b
唔知我答得正唔正確呢?!
, ?0 ^. q% O2 Z1 I- N( m0 I4 J8 `! N
[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:- W8 [# M9 i- C
1.
8 _" j$ ~0 @5 r1-6 vs 7-12
7 q0 f% B# {  y* _if 1-6 = 7-12     13 is fake
, I9 d% u7 z3 M3 _) H) x8 Y8 H0 R& C' p
& A. v( B. L: u/ ]. s7 n( B' mif not
; g, F! G. d3 P
+ @* A) `: O& v. F. _Weight the 2 time 8 q# l2 N9 `4 s7 L
- D; U0 z+ K* e, H$ Y
Suppose 1-6> 7-12
8 N; H7 c1 h; E, P% l2 f/ s
/ R. F$ R1 ~. S% M1-3 vs 4-6
% ~: d2 C4 b4 S- _- G2 {* }
( h% i2 O4 E4 r: Y7 E& w% ]Then Weight the Third
# B' v/ L' ^6 D! m3.5 q% q, i$ h/ b. s4 T9 [. s

' D, L  G9 O4 S3 Y4 P/ jSuppose 4-6 > 1-3
5 x5 q$ G- z! B* R9 _1 Q& e
& Q+ `+ g9 ^$ i7 X* o3 m$ tJust like the first Step7 G4 i% ]0 O: p9 z4 Z, G

: S! z# L5 N" E5 e$ d# s4 vs 5 1 A* Z: R& n& D' S% q$ e/ O; ~

" X! t( ]; d5 y1 ^if 4=5 6 is the fake one 5 L$ Z9 S+ B8 v

, r% D& P  @, q4 a/ Lif 4>5  4 is the fake one   L' t1 [. Y( s# O9 ^! S7 N
and so on......................

: W; S# w, j) V* I' A% O+ K
4 l0 H2 I7 x: r9 L/ C, f8 v# l/ g6 t
* V0 O$ g/ F: `) A1 v1 g3 ^( i問題第二步
' K( K9 ~) ?: G! J# q4 C) x( x2 T5 ^/ I! v5 C2 ^$ k6 x
Weight 1:  1-6> 7-12
4 y1 L  i" P# S$ @2 \+ F
( j. w% O# d2 [/ s$ d6 {  BWeight 2:  1-3 vs 4-6 , if 1-3 = 4-65 ~4 i0 I( i. C

" g' G8 t* f0 ]9 s3 L- h# g你第三步点去搵 7-12 边一粒???
/ u; s9 t1 [8 [4 {6 `$ Y7 W' U+ I, O: ]4 P
========================================/ }3 j) W* P. r& t# t# N& C' n
. R9 p0 G' c  O7 h1 T
問題第三步8 `1 S' F( u' F3 m$ {& m
& C  ~! C8 F) l4 R( s) T1 V9 R
Weight 1:  1-6> 7-12$ h  I+ ]/ N% R7 a( ]

. }2 h' H% k' S- WWeight 2:  4-6 > 1-3 * ]" l' b; f# x: g

" v4 ]- q% N8 }. x2 j5 X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