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
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8 O% v- ^' M0 a" `1 |; m3 r" N『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)。% [: j7 c5 x$ b6 w
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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$ P- P/ @+ f5 G* {8 P  k+ g" J0 ]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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( {  H, h" B7 R- b, W2 N2. 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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' x1 c7 I3 a9 @5 c$ O# V[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:0 [! ?7 p0 z' L/ A& L" q% Z& `
相信e條題目都有吾少人玩...

7 ^1 }) J4 ~+ |+ J1 b我以前畫左個chart去答,6 `7 d1 P, J5 Z( m+ U. N
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。# E! k9 A" K2 |4 c" S
13.........5 e3 d3 L9 y' b$ x% Q

1 {5 _' R$ ]1 ^6 u[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:- M0 b4 Z; B: e3 T* u* h

  u# M) c/ T) f3 h1 e9 k0 O* D我以前畫左個chart去答,
  T1 ~4 z/ Y% D- V: V! N5 f等我搵下...

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3 Y# \" X  F: n: m1 T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:
& Y: D. k5 A. U* Z" b( H唔識隱藏...已經諗到..

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/ p+ J' A1 r$ Q/ k- P+ ?sor !!!....e加改左
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6 @' w0 J  j" O2. 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& ]* g( h7 K9 D7 q/ V
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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:
" _' ]( K( g& [1 ]相信e條題目都有吾少人玩...

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. ~/ R6 o* z# l* H9 ?% GPlayPlay, 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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9 F4 q, a- K2 |, y9 `' Q7 T6 W) M8 i6 ~PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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0 K5 Q% s! O, a3 e* |- x* R* GThanks

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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

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1-6 vs 7-120 o& f  o$ b3 _- l' c
if 1-6 = 7-12     13 is fake! Y) G2 c) z9 J
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if not ; G% `: b  f' T- G/ t2 T, S- [& S

- j; i! ?8 [, b/ O% JWeight the 2 time ; e1 ~# B( W9 L6 t$ }

$ @, r$ Q  Y- }$ M: F* iSuppose 1-6> 7-12
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1-3 vs 4-6 ' r4 e) N, Y! r  C: |% n
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Then Weight the Third. J5 A5 E. m8 v9 k7 s
3.
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: x% \+ ?0 d& {& O# RSuppose 4-6 > 1-3
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5 d; k8 Z! ^1 r9 J2 {Just like the first Step" w7 j9 _/ A  }* Q; b

6 Z. I$ R0 o2 U7 f" B$ y3 D4 vs 5
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if 4=5 6 is the fake one
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  L1 l+ B9 D8 _" O; B2 Wif 4>5  4 is the fake one 6 s! B( j2 G/ y* A: g$ ?
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and so on......................

hello1997

分3組4隻波子秤' ?6 i- o$ a7 c
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Group A: 1,2,3,4  i) k* J3 Q* m0 O# e8 J( x
Group B: 5,6,7,8% |% d( C/ }: _6 h5 B- P
Group C: 9,10,11,12
4 c: d% S0 E# V% S& W1 \Group D: 13
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8 a; ~- W" I1 h, l# }Round 1
+ |8 C; g! K! |6 qGroup A vs Group B
- c/ ?$ H7 l6 T" f8 E6 H( {! `  K3 }如A and B一樣, 即較輕一粒在Group C or D2 ~7 K9 [9 W- o3 R3 d1 V# S
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Round 2, g: y: I/ \6 Q& \2 n
再在Group C拆成:6 h# `5 Y5 o; ?0 x7 ~! D
Group Ca: 9,105 S* j6 A) n, L( R) d- `6 m
Group Cb: 11,12
& F3 N* w" |$ F6 |4 E( u2 ]. v) v; a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, 3 f' u" v2 O$ z
要再秤, Round 3, 之後便知答案.
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0 \) y* s2 F! ie.g. #1 假設10為較輕的一粒! b( y3 K1 l7 R# N
Round 17 V% s) @! u' K0 P' n
1,2,3,4 vs 5,6,7,8 = equal: b9 a6 [/ t) j) |: R. O$ Y
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Round 2
: s/ s4 y3 S: A# {5 S' k9,10 vs 11,12 = 9,10 < 11,125 _$ ?/ @1 \% M
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Round 3. }: C6 r- e/ i% Q, ~  }# U% _
9 vs 10 = 9 > 10
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The answer is 10.
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- K7 W- l5 T, }2 E8 ve.g. #2 假設7為較輕的一粒
2 F0 k' ]) l" d! ?( m; f. ]Round 1
4 Q) w+ T8 ]+ \/ A7 n  B5 S: y- q1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8# t+ I; }9 [& d. P! n8 g! N4 i# F

5 N# n: x/ Z$ S  kRound 2/ J3 R7 @/ @4 I6 B" Q
5,6 vs 7,8 = 5,6 > 7,8$ j  X, e& M& b
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Round 3/ U% }$ `9 G, D% H2 O
7 vs 8 = 7 < 8
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" n9 o- M2 o+ L! I# n. N' [The answer is 7.
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2 S1 B% a( V+ |7 De.g. #3 假設13為較輕的一粒
' Q( @: ^0 h7 IRound 1
8 p6 m1 f) r" {9 p$ ~# `0 a  f1,2,3,4 vs 5,6,7,8 = equal
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. ]2 E, f4 K* C  f% R& ~! E6 e; F9 LRound 2
" F5 [5 _' f: k, s, ^  `9,10 vs 11,12 = equal0 R1 a% S: B: E( T5 R9 I3 k& R

" Z. y# }+ l; H. cNo Round 3
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The answer is 13., d& n; Q  d) c9 c  P

" V" Z/ L/ Q5 g1 P5 q9 K; t1 q  n# [唔知我答得正唔正確呢?! : N; F8 z) B& `5 w
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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:7 t6 [; n, \# I4 p
1.
$ N% {6 a2 A# R' b) o1-6 vs 7-12* ]  a$ X+ [1 i  i
if 1-6 = 7-12     13 is fake( X. N2 p1 x$ B' D

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# i+ B* o3 Z3 L" L+ @3 sWeight the 2 time 8 L- B. ~4 e; }9 f* d- N1 l

' z; Z. c2 b4 OSuppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third: X0 G3 D$ q' q! L/ G. C! B, k
3.$ M) [( r/ R  t7 F# O

$ |) E0 H1 E. M6 ySuppose 4-6 > 1-3
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Just like the first Step
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4 vs 5
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if 4=5 6 is the fake one 3 f4 _( Y9 e! d6 z% J' e! ~

8 l" v2 @7 y. u9 d+ a  Qif 4>5  4 is the fake one # j9 d' [- I# X6 L4 i. X
and so on......................

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問題第二步
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% \* ?  v* j3 F- SWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6) k: H7 g- B6 P
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你第三步点去搵 7-12 边一粒???) n# h  K9 M+ h

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& O% E0 L. c8 v, _問題第三步
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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. q2 {9 d9 E+ t) f7 [" @$ X1 Q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