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7 ~2 S) U9 b) t

2 a( ~: R+ N+ }8 |0 b『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)。5 S6 U7 o7 A6 G4 G; @; q
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？』3 k2 _8 a0 m. Q0 B5 E. O
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注意:
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% g$ _# }5 p7 Z& j- l1. 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 _& b5 z4 F9 U% x; o* q' W2. 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:
" V' H% d! ~5 ?) e6 F2 A相信e條題目都有吾少人玩...

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我以前畫左個chart去答,
; n. O3 V! r" j& c等我搵下仲在吾在+ \; m  t6 T4 K
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
# {. {, X( J9 u4 ^$ T13.........
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( s3 r% Y2 J- C! \8 Q  q! x[ 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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% X7 p: {5 V( d4 W/ ~$ k  J我以前畫左個chart去答,$ O. G+ H* l# A: `2 }. ]- m
等我搵下...

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) \8 U7 x  n2 V# J- e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:& \6 j# J# m$ y* q( z
唔識隱藏...已經諗到..

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5 c) e6 b, L8 x. v+ l9 |9 [$ Osor !!!....e加改左
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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:
/ i( x2 S* y# D- i) \! ]% g相信e條題目都有吾少人玩...

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% q1 a; M5 t6 ~( W0 uPlayPlay, Let me know later who has the right answer and I will add points accordingly.  J/ J1 \3 e& J7 \
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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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# \8 k9 W+ f2 Q5 PThanks

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4 g4 g6 l& c) z6 y+ g" T6 f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) Z6 q! i  T# t
if 1-6 = 7-12     13 is fake% V% C& B5 `1 A4 X3 D; J) c  {
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if not
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Weight the 2 time 4 w0 ^$ n+ {2 j# L2 H1 b: U; |

: T9 B& ?4 ?7 l. aSuppose 1-6> 7-12  K9 \% M" |* {" c
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1-3 vs 4-6
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Then Weight the Third& ?7 f& Y. e8 `6 Q, p6 k; z
3., D5 W0 {' B% X9 W& Y# o. ?
3 y, y! G- T$ w  a0 Z' q# N
Suppose 4-6 > 1-3
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+ d" W8 E! b$ x6 X, FJust like the first Step2 g% o1 ~$ B. {% w

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if 4=5 6 is the fake one
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5 O5 w+ T- E" @% G( t" `  pif 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤# `# ^8 }1 ]% |0 b9 u) y: T

$ b) j# ?! |9 Z- R+ n- VGroup A: 1,2,3,4, j) x, U) p" ?3 F6 m4 h
Group B: 5,6,7,8
/ v; c) _, j% j# W6 P' e! a0 |Group C: 9,10,11,12
5 K7 ~+ L5 B( e/ Z+ p8 ]Group D: 13
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Round 1( t5 p1 H, {- A$ K1 c
Group A vs Group B
% K1 o  E! O5 \" s0 }" y# n如A and B一樣, 即較輕一粒在Group C or D+ h7 i3 j4 [/ a9 `/ ]) k: R

' O3 C. s, s7 n, l  I( d. d* v! jRound 20 D$ Y  f! W6 S# M' ?
再在Group C拆成:8 R/ {' X- P" r6 E) a) `1 B
Group Ca: 9,10
' ?  ]- m% {3 P/ B$ x0 `Group Cb: 11,12
4 s! {# C/ ?% X# z然後再秤, 如一樣, 即13為較輕一粒.9 `- g5 }  S! ]& k, M, R
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如不同, 即較輕一組有一粒較輕波子在其中,
. }# G1 I1 H: ]要再秤, Round 3, 之後便知答案.8 t* X0 ?7 q5 ]! r- D* F: J

+ Q1 Z0 B* k& e: d) `9 Je.g. #1 假設10為較輕的一粒+ `8 c6 R2 o1 j! G& w5 ^. m9 f
Round 1+ h9 k! s7 s- V& {" R. K2 T# }
1,2,3,4 vs 5,6,7,8 = equal
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6 V/ l" \+ a& tRound 2
: ]  F0 y. j, y9,10 vs 11,12 = 9,10 < 11,12
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( p1 ?: |* }! O" [6 a- dRound 3
& f- Q  i. d  o( |9 vs 10 = 9 > 10$ T. C% R: d6 B
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The answer is 10.) h$ M, ~* `5 Y& K, H

* V) v" k; ~4 l0 C2 l: d2 Y6 Pe.g. #2 假設7為較輕的一粒
. T; G6 o5 w0 ^# Q+ N/ eRound 1) ?4 G* }, W- E" }2 e
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8- M+ P$ M4 `: M! `6 \3 @
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Round 2
# v- u; E8 I# D5 i9 Z5,6 vs 7,8 = 5,6 > 7,8. q0 a% U; Z  i$ W1 @1 ^
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Round 35 Z9 I+ o* m1 y- J, g: V- Y
7 vs 8 = 7 < 8
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4 ~, e0 A9 C' I0 D1 OThe answer is 7.
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; ?* w' _+ }  S2 r; Xe.g. #3 假設13為較輕的一粒
% v+ M+ u. H7 i  t; z4 r  ^Round 1% C, u( d, @" i6 ~- ]$ V
1,2,3,4 vs 5,6,7,8 = equal2 Q8 r0 ]( C# {6 _( g4 \0 X

" \/ t/ N% x- R( v' |+ ~2 IRound 2
9 m" b$ ?; b' D9,10 vs 11,12 = equal1 i- h5 A) T4 K  l; F
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No Round 3
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The answer is 13.
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* }+ l# M# y9 y- N唔知我答得正唔正確呢?!
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" n8 {6 S$ M, g, Z[ 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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3 x. Q: c7 u5 c2 G, i1-6 vs 7-12* ^3 J0 z' ]  X
if 1-6 = 7-12     13 is fake
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0 R/ v5 o' P4 O4 L" f* Iif not
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Weight the 2 time
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Suppose 1-6> 7-12
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) [8 Y& A9 r2 y  I& G6 Y1 m1-3 vs 4-6 ; ~" R2 I* R% }: i+ C" t1 ^$ O
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Then Weight the Third
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Suppose 4-6 > 1-3' ]6 p) s+ ?, ^+ l0 Q7 }- d2 J* h
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Just like the first Step. w5 d3 q" e  R3 a: F# F) r) x) v
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4 vs 5 7 k3 \  l" n# U3 o6 O
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if 4=5 6 is the fake one 7 }2 y: T  p; f2 J3 S
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if 4>5  4 is the fake one 0 @9 f8 w' B4 N" [( h- @' r
and so on......................

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' _$ X# M4 e$ ]* Y' M9 X! i問題第二步
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  \* \) E$ v# h) nWeight 1:  1-6> 7-12
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. z9 t* }4 c8 |( a( N+ |; _Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6+ m2 d! [& T6 n: X+ T9 J; i) P

  C3 g8 y" `5 \; ?" u你第三步点去搵 7-12 边一粒???# P) R1 c* H* c8 e

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問題第三步
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Weight 1:  1-6> 7-122 u2 t  _' m' ~/ O

8 `6 c# `; M. \( ^+ sWeight 2:  4-6 > 1-3 5 Q( k. G. G1 B5 z, j4 W( |& t

9 A8 o" R+ ]) D; }, l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