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)。: B1 `5 C1 y" I# ]; R3 i
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: ' W4 r" @/ z7 @: j7 ~
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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$ o. d+ O8 {' y8 O3 D# H+ a# x1 [
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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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% n7 P( R  |  z/ ?* ^6 b[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:/ N2 p7 }2 T, D* p( X$ ~+ e
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,4 ]2 O3 i0 X2 Q+ Q
等我搵下仲在吾在
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: j! Z& Z; P% G當日用左37分鐘答１２粒波子，差７分鐘才合格。# W" E0 G+ }! O1 j% C$ ]- m
13.........
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- l- m/ j3 Q  r7 L: S[ 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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我以前畫左個chart去答,0 i5 @: w! Q2 O4 Q/ J
等我搵下...

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2 l% P3 c/ C# O$ n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:: a# V  ~/ t! L
唔識隱藏...已經諗到..

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sor !!!....e加改左8 L7 R- r) _: m3 M. _

) }1 [! ]9 p+ ~2 T2. 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( I# w5 L' p, ]# ?/ J& N/ 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:/ C+ `- {. O8 C/ `9 T0 O2 D
相信e條題目都有吾少人玩...

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) V2 C0 J, k! H7 Q& \! ZPlayPlay, 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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; b% h( X* D* L' ]( ~9 _PlayPlay, Let me know later who has the right answer and I will add points accordingly.! J) p6 F, U6 n3 @/ T+ t
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Thanks

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7 u  M) j1 D  `5 u7 v+ P3 o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
6 @; w) y6 S& d& I) d4 cif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6 " r7 z% p3 u, V5 o. D
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Then Weight the Third+ Y% u3 {: |  ?2 j  A
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' a% b3 @' ]$ [% z" |3 K9 ]Suppose 4-6 > 1-3
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Just like the first Step
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& X4 m+ Z3 D7 W; F. k  ]$ g4 vs 5
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if 4=5 6 is the fake one ; \7 g$ Y; A; h6 L0 U+ {$ j5 J+ T
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if 4>5  4 is the fake one
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" O# \) L* ^: W& {- hand so on......................

hello1997

分3組4隻波子秤& ]# X- b% n2 m

/ G! C/ U3 v* T( IGroup A: 1,2,3,4
3 K1 @& w( z- H) VGroup B: 5,6,7,8
8 c" {! X" \9 ?  e; P8 BGroup C: 9,10,11,12; X6 h, a2 ?. B& [% l3 Q. n1 T7 K
Group D: 13
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0 s; I& P1 v) M- r" p. r4 B6 wRound 1" x6 f+ y, ?: x" d9 Y  @
Group A vs Group B! c, d, A6 N0 U/ n
如A and B一樣, 即較輕一粒在Group C or D2 u. F' t$ C. h" N  Z. W
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Round 2
. q8 n  u, `2 O" B$ d. H再在Group C拆成:
% R; i/ J; l0 E) @3 e1 c  ZGroup Ca: 9,10* l* g) {! x$ }. K; W" F
Group Cb: 11,127 b8 `  h  O& z. D
然後再秤, 如一樣, 即13為較輕一粒." V/ r# m  \, z& z
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如不同, 即較輕一組有一粒較輕波子在其中,
; t# S5 P& B/ C要再秤, Round 3, 之後便知答案.
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$ e1 t; A1 F/ f% Fe.g. #1 假設10為較輕的一粒
- y, D3 F0 Z+ }! bRound 1- E+ t, u: L/ u7 N2 B/ ?! T
1,2,3,4 vs 5,6,7,8 = equal
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Round 24 {; h' C) r$ N, B- J- O
9,10 vs 11,12 = 9,10 < 11,123 c. k! m( }) E( Z  o6 [' ^# N
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Round 3' j/ b0 ~$ z( e8 T8 I! g8 t) n, L
9 vs 10 = 9 > 10; P$ m9 L5 b  L6 L4 y$ v$ u

) \6 g8 [$ r6 i4 O; N- ]* f! }The answer is 10.
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0 {4 p; B( V# C$ v* y6 T3 Q  g; pe.g. #2 假設7為較輕的一粒
3 ~/ E4 F  n, B( Y+ vRound 1- V+ b- a9 q  w! r# X, g
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8) ~& l" P8 z9 e: L0 {4 |

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5,6 vs 7,8 = 5,6 > 7,8( Z- w: G/ L8 L; Q! o0 _: M

1 Z1 _% P6 t7 \' G/ Y4 NRound 3
( Y9 Y  ^2 v  i" _8 ^7 vs 8 = 7 < 85 F3 _" d9 v! P1 z7 ?
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The answer is 7.
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3 @) Z$ x2 ^$ J) w; N$ N3 @$ ce.g. #3 假設13為較輕的一粒+ V& I8 e6 ]6 S2 E
Round 15 b, ~+ a6 C7 o1 Y, V
1,2,3,4 vs 5,6,7,8 = equal" P3 U( f4 n. [( g/ ^
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Round 21 F; ]* V/ H+ ]2 V( m+ ~* j
9,10 vs 11,12 = equal
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/ y: h! x" Y( iNo Round 3& V& K% z7 r! z& r4 K

3 m* w9 v4 P( s& l, P1 Q. iThe answer is 13.  \" _# m$ p' ~) P$ O6 X4 q3 O, f

2 K7 o* t+ R# O* M唔知我答得正唔正確呢?!
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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:- g0 B. s4 R- B2 M$ k8 F$ s/ A
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1-6 vs 7-12
  O1 o  ]( v1 J0 i) ?6 K; Uif 1-6 = 7-12     13 is fake
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if not : I% W+ J. x# }& _3 N, L/ ?! v
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Weight the 2 time
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Suppose 1-6> 7-128 C0 }0 l; G5 ~3 ^1 x

+ o* M& c& X, {9 f2 h1-3 vs 4-6 ) p- J  I# y$ N$ c) ]3 \

" ?! F* F# H! AThen Weight the Third1 V' L& V  ?/ B, X: N9 s
3.
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Suppose 4-6 > 1-3
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$ l8 g8 f9 z8 s. D0 p. v7 _! r/ oJust like the first Step# o& p: u( q" C1 y) h1 I; }/ d
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4 vs 5 # n7 S% _7 ], d: I7 r( Z

5 a$ }8 |7 [' d/ Z9 T% {if 4=5 6 is the fake one
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0 o! i; O) ?9 ]; o  Kif 4>5  4 is the fake one & X9 J- z% }7 }8 ]
and so on......................

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問題第二步7 R5 C* c$ L$ J) [, k5 a

+ Y6 F3 \9 @2 _% D) YWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6- |: m5 f2 x1 y0 g

3 v- {0 R. ^+ q你第三步点去搵 7-12 边一粒???* F; m% g4 w/ Y+ e
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- c; E0 }9 l3 x1 A問題第三步% ?: G5 _1 k* i3 P
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Weight 1:  1-6> 7-12
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0 ]) S+ [: b8 ^4 GWeight 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