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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『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)。
( P- z1 Z# v8 I1 g' M/ 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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; n3 d. c- \' a6 [+ o! {注意:
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# }9 N: }; \( m3 A9 S: W- x# Z1. 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" @- o" p) e) K: d
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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:
3 ~% W7 Y  z* P7 N- L  m1 _相信e條題目都有吾少人玩...

% b2 O: }" a, G3 q) }" m我以前畫左個chart去答,( m4 ]% W) L" h5 {: Q/ w
等我搵下仲在吾在. W9 I2 j, K, p3 O) R
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
8 _; `+ Y$ K4 M13.........0 w+ ]0 b3 O9 P

' L1 F" F- X0 x5 x' U9 J+ y, Z( b8 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:
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- F( g; A4 i5 o# w" }/ i我以前畫左個chart去答,6 g. \! O8 N: H  |- X9 j
等我搵下...

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& \) k; O- A) A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:
: @% i. k8 M+ W唔識隱藏...已經諗到..

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& ]0 G! a# ^: U: Hsor !!!....e加改左
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, m% W4 U2 y7 H. I+ x4 V! X' c- B2. 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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! b& ~9 F/ N. o+ s* r[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:' A) v. E& ^) h; M/ U
相信e條題目都有吾少人玩...

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! C3 L# D' S! _& Z2 _PlayPlay, Let me know later who has the right answer and I will add points accordingly.4 |7 F% K) h! D, L/ x

. H- _) X$ W3 |; W' i4 [Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:, l: K9 K' u; b& U! }

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1 U( @7 L+ g2 V+ J7 @1 J7 v, T$ c  V5 V5 NPlayPlay, Let me know later who has the right answer and I will add points accordingly.9 A( r; \3 j7 c
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Thanks

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; F: z1 d' i6 ]& {% \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
0 n' c4 k. m! m8 M8 r2 Pif 1-6 = 7-12     13 is fake
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  \$ S! V3 J, M+ t2 mif not
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6 `# [1 v* i5 o8 o! S$ J: h5 V) L  T1 DWeight the 2 time
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7 T" C* y& l% ~* k+ fSuppose 1-6> 7-12
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+ [; V/ v! K/ m& w& l1-3 vs 4-6 0 X$ u0 I! s" X+ c3 n4 s
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Then Weight the Third
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Suppose 4-6 > 1-30 o  ^8 W3 x0 W9 h8 c3 ~! w

3 E3 _. a" W/ ]3 A; N% X6 i% q$ RJust like the first Step' e' P$ j( g* }1 j; \% C5 {
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4 vs 5 + H% i) q9 o7 }& Y
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if 4=5 6 is the fake one
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9 u, n! }  q6 j% v0 `$ qif 4>5  4 is the fake one . n, p  S2 l3 k. a! \
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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
# t1 {0 i6 Z  f- p/ w# _1 T# qGroup B: 5,6,7,8- I$ O( l. y$ {8 l' o
Group C: 9,10,11,12/ {' {8 ?+ X( k5 {: U/ c
Group D: 13( n, g3 W) P* d6 u0 q
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Round 12 Q+ U% w3 \7 v5 o0 X
Group A vs Group B
. _! @$ O: K( O+ C# E% x5 L) g7 F如A and B一樣, 即較輕一粒在Group C or D
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- q) t: F; y: ~" ]Round 2
* O& O& g( d/ k2 U% Z1 Q再在Group C拆成:: V5 f9 x6 k# j' R/ c) O* O9 B- ?' v
Group Ca: 9,10
- c2 P7 j, Z) m, e, Z( q- \9 u4 iGroup Cb: 11,12& v2 A6 h  H( O! E% ?4 {4 m( z
然後再秤, 如一樣, 即13為較輕一粒.
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6 \/ y  F2 U  f2 @# o( q8 H2 F) L3 X如不同, 即較輕一組有一粒較輕波子在其中,
/ I5 w. d2 p  ^5 k0 W! Q1 Z  Y要再秤, Round 3, 之後便知答案.
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: D3 C/ Q) I: H8 p  ~! h) ie.g. #1 假設10為較輕的一粒
; P. k. C/ e) W$ j! nRound 1
4 z" d" n2 K2 g8 f7 N1,2,3,4 vs 5,6,7,8 = equal) s1 `! P, d9 F* @$ m- H

& [( t& A4 _# Z$ v  c, ARound 2
  l2 X  I) b% {% _* H9,10 vs 11,12 = 9,10 < 11,12
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+ Y# J1 H' q) R+ _; I! nRound 3
& p0 _9 h- e0 r8 r: C! J9 vs 10 = 9 > 107 S  x& B# F- Z. A& m0 Z$ r' i

% ^8 S( @  ?: AThe answer is 10.  m+ n$ u4 Q; R+ X; m: F% Q
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e.g. #2 假設7為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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% L4 |# M6 N  [1 f- oRound 2
7 b! }( `% `7 L4 a1 R3 `6 B- x5,6 vs 7,8 = 5,6 > 7,8
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Round 34 ~# `2 a4 j! o6 \3 O6 Z: [5 q) L
7 vs 8 = 7 < 8  G& Z9 W! L+ {/ s' Z

; e$ M( |1 |6 fThe answer is 7.0 L0 U4 s0 R3 G

/ w$ `. K: N9 F8 Ee.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal- ~" D/ _' f1 k8 _' n' ~
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Round 2
9 |4 h+ R# m; k: B9,10 vs 11,12 = equal) p  G2 [$ l; U# r8 x- F

& o. r" G  K2 T/ P+ SNo Round 3
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2 m0 E0 Y+ T, HThe answer is 13.& Y# m$ {) n9 W: g- G
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唔知我答得正唔正確呢?!
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* S; J, M2 n. @- O4 z, a[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:9 S) n; [! [* f5 _3 U, a: f, N, y- ]
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1-6 vs 7-12
# Q  y7 T, u1 _if 1-6 = 7-12     13 is fake
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if not & D2 O8 b2 K, Z! d" y' W

: g8 }# s  `* h3 n7 a+ B5 aWeight the 2 time
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Suppose 1-6> 7-12
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" E' o, \3 b' M4 Q1-3 vs 4-6 * F5 Y) W0 a, r% N6 B& m. ]

( G" r7 e0 ^+ tThen Weight the Third$ P0 ~6 d  T! c' S7 D0 n& L  j
3.
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Suppose 4-6 > 1-3
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/ s8 B# Y4 t" O" b/ W. sJust like the first Step2 [' l8 A+ m$ c' e6 w, S1 R- u2 V
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4 vs 5
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if 4=5 6 is the fake one & F* ^+ ~: w9 I
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if 4>5  4 is the fake one
3 }0 p* J) r: R+ _# Iand so on......................

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/ y; d9 F# e2 v8 q9 |4 n8 E問題第二步
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Weight 1:  1-6> 7-12, j. |( v3 z; }; q# |4 |8 }" F9 }

: P. N& d6 C, g) @3 ?8 yWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6$ K- H, \9 {! Q* g8 ]8 u; J
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你第三步点去搵 7-12 边一粒???1 z! t$ Y. g8 G4 [* I! N

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問題第三步& {9 {. P3 k; b6 j

6 A# v7 y2 n4 XWeight 1:  1-6> 7-12& u( ?- U5 {, y. F4 O+ K

3 f% t& ]: 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