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1 w2 P& q5 ?! k, M
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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)。
0 s! j  F% u! o5 \9 ^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？』. r/ J, n% U/ m. A2 j
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注意:
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2 t. G# k7 x2 s2 q* U! ?) \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3 D  D6 P; d* n

1 J: `2 E" q5 ^, `- p0 Y+ X) L% P2. 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+ U" Y3 P* Z- Q, d4 r
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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:
! c+ V9 R7 @! \$ S( v  A2 r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," O8 @& j2 X! ]
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。
$ Z+ v# j, q6 H# d3 ^. a1 V; G13.........
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0 ~( F( _# o3 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:% \8 @. x2 V* l: Z
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我以前畫左個chart去答,3 n1 V5 G/ |- R
等我搵下...

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) y! F, ~3 J' x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:
, W8 r4 t6 P5 |) _2 D+ [唔識隱藏...已經諗到..

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$ Z( V  x* G" N, F! @sor !!!....e加改左
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: |" p" G! i6 \8 u) u# Y2. 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:
: D4 ?! C5 u  V: J相信e條題目都有吾少人玩...

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& q$ J+ T, A; L# \8 [) H% w7 kPlayPlay, 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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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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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

1.
* s. C7 N& h3 K& N  r$ @1 Q# q. k1-6 vs 7-12
; n: B4 H( z  qif 1-6 = 7-12     13 is fake
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if not 7 m2 {  C8 ?% }/ U9 \; p; J7 t, U5 Q

- g* G! }- |; C  D6 R& b7 j* YWeight the 2 time
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) c: Q$ P- A4 Q0 zSuppose 1-6> 7-12
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1-3 vs 4-6 ! j$ U- ]8 Z2 P8 w; J* T

. S+ M7 F+ |$ g9 [5 QThen Weight the Third
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5 s/ t8 Z" u6 I) p3 N* P6 G  \3 FSuppose 4-6 > 1-3; N0 g2 r% _+ f# v
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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
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if 4>5  4 is the fake one & ^/ h6 E- v! ?
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and so on......................

hello1997

分3組4隻波子秤5 K4 h4 s8 q& G: i3 E5 ~# G8 J

7 z/ {6 ]- l7 ~# Y. W, E! v5 WGroup A: 1,2,3,44 Q5 o, L) k/ E
Group B: 5,6,7,8
9 K# N" D9 j( f; X3 XGroup C: 9,10,11,12( `7 [4 ]! B5 |9 z
Group D: 13
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# G/ Q( Y0 r  [8 X; c4 a$ f0 r4 [Round 1- F& p& A3 X2 S1 K
Group A vs Group B; }. x2 A- H6 H8 R1 g
如A and B一樣, 即較輕一粒在Group C or D
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Round 2, T& c) }5 ?# e) w6 ]# q* z
再在Group C拆成:& P0 O( H4 D" u3 z. n. S. Y' {4 e
Group Ca: 9,10- `* G4 e8 n& R
Group Cb: 11,120 m3 |0 l+ a1 e, C, [
然後再秤, 如一樣, 即13為較輕一粒.; M+ c1 x, B5 z0 C8 h2 o

, @! f: i8 O" y# G( J% u* }- B如不同, 即較輕一組有一粒較輕波子在其中, 8 T) L1 U: G0 o0 m% }( p& E
要再秤, Round 3, 之後便知答案.9 x% ]7 B# i0 p' E7 T

* {! l! a0 z+ i7 e0 Y0 S. k: G" Oe.g. #1 假設10為較輕的一粒
/ j5 _  }, g4 lRound 1. B+ a5 s9 n) t( Z: l
1,2,3,4 vs 5,6,7,8 = equal
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3 r' G2 B+ b4 _- t6 l/ SRound 2' w, p2 b" N3 I$ q* _
9,10 vs 11,12 = 9,10 < 11,12; a7 a8 l. x2 K* |+ C! @1 J9 V

: l* X- m% c+ Y3 D" ^Round 3; z. q" p' }0 E0 q% M+ A4 W
9 vs 10 = 9 > 102 l" ]6 t9 M: K6 R: @6 G

$ ~. }: M7 w) B. aThe answer is 10.
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e.g. #2 假設7為較輕的一粒5 y. q& s, Y7 s  ], u8 H4 S
Round 1* A3 g) [( v5 |  L! W7 W! V
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8% ~3 E+ U& z; U+ C
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Round 2
- }  h# @; v7 f. M5,6 vs 7,8 = 5,6 > 7,8
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8 S) v0 \8 j& \4 U$ s$ VRound 3. }+ [- {% ]/ N  a$ X
7 vs 8 = 7 < 8) `; z0 H9 M/ ^: Y+ U( |
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The answer is 7.! q3 _7 @2 J! i+ h1 A/ ~* F
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e.g. #3 假設13為較輕的一粒- T# p# o4 Y5 v! e8 x# s- C
Round 1
6 S# [$ G4 J, Y1 R+ ~1,2,3,4 vs 5,6,7,8 = equal
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Round 2
1 F, Q% W" g4 H& V2 i9,10 vs 11,12 = equal
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No Round 3; A( Q2 o% @1 f7 q" ~; X2 L

! S7 k: S7 d& n" _6 {/ ~7 e3 RThe answer is 13.
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唔知我答得正唔正確呢?!
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' S( ]& B2 v+ e$ N% H( O7 o[ 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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1-6 vs 7-12
- C; Q1 N0 V6 @. l/ f7 Y8 G& Nif 1-6 = 7-12     13 is fake9 q  h* r/ |3 M" q8 |3 r+ D7 |4 [

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8 U# r$ ]/ b9 Y/ s" J: b. kWeight the 2 time . t8 B( N/ a; F" Y% _0 ]

! i- ?& W) f6 f, SSuppose 1-6> 7-12
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1-3 vs 4-6 ' M' w4 j( O# ^
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Then Weight the Third" U& {0 B- D- f* `8 s2 N- r  b& d
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Suppose 4-6 > 1-3
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  f0 g' u" C  Z2 ]% z+ r& ?* f( V* [Just like the first Step# J, g0 j7 X* d7 @+ p; u) m
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4 vs 5
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if 4=5 6 is the fake one
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  h+ n7 @1 I% W. T0 uif 4>5  4 is the fake one 4 L8 t# r2 D. A, r6 F
and so on......................

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' G5 ^/ _/ ]9 ?; x% `問題第二步4 S% b- z! M% R5 D8 x4 l8 _

1 _9 A! D& m" G7 p! BWeight 1:  1-6> 7-129 N6 S# m, Y, b4 A$ t% L7 t5 b
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???8 t- y4 x" {: J. Y
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$ p2 o4 M2 t1 y4 b( w* F+ t問題第三步2 G) N& r5 g+ S  I0 S

& Z  B( }% S7 |* S. vWeight 1:  1-6> 7-12
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Weight 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