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 f" R, q- Y6 K

% D* Q2 W. a2 ]4 F( {# G5 _『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)。
; ?- ^/ @; P3 ]' @8 Z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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* p7 Z; ?/ p7 F+ J1. 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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; d) Q3 a9 H0 Z( T8 i0 m2. 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:
9 ^( B1 f% U6 f7 J相信e條題目都有吾少人玩...

  b. F2 g" }2 l: ?! Y6 \0 H我以前畫左個chart去答,/ v/ I' p" k2 d. c5 p
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。+ k4 Z/ R8 k; {9 W0 }$ c
13.........0 _0 [' O* K! z9 A* g+ P

) H9 A2 V  G0 e1 M1 O1 B5 Y[ 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,
! d8 [9 e/ w' i等我搵下...

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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:
* h0 O! f% H! d1 T2 n唔識隱藏...已經諗到..

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2 G9 g( [2 x8 F: Q, t- msor !!!....e加改左
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- q( H) P4 H# w5 R- i& 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
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, a1 q2 {3 |  Q' q2 q[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
  s. h: h7 Y9 e. {+ o; O相信e條題目都有吾少人玩...

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- Y# l* J7 A* 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:+ c( B+ o3 h9 g2 e: Z
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.  t. m: y0 Y0 P
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Thanks

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% m0 O7 P8 Q5 e2 j% {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
2 n2 S% O' b* V3 zif 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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% j5 P5 n+ L+ Q  _* I1 _+ [% U7 ySuppose 1-6> 7-120 c& U$ \3 l# A* M$ z2 G3 v; e

" R: ^; x6 r) S: ^, j1-3 vs 4-6 % w# z8 {- s2 c5 E0 c5 ?8 ~( r! ^

3 W# \' |9 f# B1 bThen Weight the Third, _( e8 N5 E8 B% E
3.
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! z3 _$ u3 A* g5 P1 W( MSuppose 4-6 > 1-3
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# ^, Z+ e7 @9 `% l6 c; B8 lJust like the first Step; n; R6 ]! d) H, _% A# c
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4 vs 5
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- D% K; y! w& c6 Z7 I" U1 ?if 4=5 6 is the fake one
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1 H. k; V* n+ Jif 4>5  4 is the fake one 4 E6 `- T! u+ S6 ?; n& t- M( Q8 ?
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and so on......................

hello1997

分3組4隻波子秤
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0 X" F  z7 }% w+ Q- R  RGroup A: 1,2,3,4% c3 o  o% e, c2 ^
Group B: 5,6,7,81 `) {: {8 t( p! c4 c
Group C: 9,10,11,12% y6 n% U/ C" V& A
Group D: 13
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+ b( V' c* \2 ?$ xRound 1) G" Z1 \+ K' g3 {. L
Group A vs Group B: K  U9 q! B) M1 }; Z
如A and B一樣, 即較輕一粒在Group C or D6 e, G; Q$ ^& x: p1 v  j/ {

; q  @# W. ^! Q( Y1 g+ mRound 2- M6 v' j, Q: d  i* G) B: g
再在Group C拆成:
8 I) R9 J, _- C* [4 r" m5 p4 @Group Ca: 9,10
, i3 c% q8 h. V0 HGroup Cb: 11,12
! T, D9 Z+ h! b6 W8 d  D. R' ?然後再秤, 如一樣, 即13為較輕一粒.9 s$ l# O* R2 O% F! O

" Y. O, H' c" ?如不同, 即較輕一組有一粒較輕波子在其中,
. [% G4 c& I# a! b8 M! T+ e要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒
9 W8 l/ g" S6 o% \8 {* `& ARound 1
' k# @' |  X5 l2 i3 u. R3 h1,2,3,4 vs 5,6,7,8 = equal! k5 ^* P( S4 N, Y2 M% F. a

: _) i8 m8 ]9 l6 _. URound 2
8 u  {8 F8 @# R/ R9,10 vs 11,12 = 9,10 < 11,12
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6 _$ E" ]: \8 F" c1 M, }Round 36 _, y2 m5 w/ X% t6 A  J
9 vs 10 = 9 > 101 t# V/ O/ i9 u( A

0 A3 K. V' t% ^The answer is 10.
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e.g. #2 假設7為較輕的一粒4 c8 u' U  `1 U- z
Round 1/ F" k) ]7 e7 l0 N% _+ `
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8" x* w, a( b2 P3 \; C4 _4 T3 u1 G

5 S1 d" B+ g4 _* C2 ARound 2
/ q4 k5 I9 Y) O  F/ f5,6 vs 7,8 = 5,6 > 7,82 D  M* J! L' T# t
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Round 3
7 E; Z% X# Z5 i+ N7 vs 8 = 7 < 8
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0 T; o. J+ i- H8 CThe answer is 7.8 U- D! t; m4 y4 @$ {3 n

0 @0 t9 v  e/ n3 Ne.g. #3 假設13為較輕的一粒
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5 K3 |! [" @& R6 ~: ^: D9 G# Q1,2,3,4 vs 5,6,7,8 = equal$ G& Q. \8 M# ]0 W& H) F

) `6 b1 C; C/ `) a4 |, b0 P) ZRound 2& q3 l5 _9 _# N  O1 i/ m
9,10 vs 11,12 = equal( K- W1 _' }6 p4 @
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No Round 3
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0 h: B" r1 E2 MThe answer is 13.; b. \. c* q1 G; J, j# b

$ k% {1 H# P& f唔知我答得正唔正確呢?!
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, N" v6 e- i  {+ S[ 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
0 p" B- S5 ?- M8 V: a& a0 T. @if 1-6 = 7-12     13 is fake7 z3 G+ G+ ]7 e

+ C( }; n6 u" O, F$ Dif not 0 C! M3 w" r$ D! V) W/ d/ I
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Weight the 2 time
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% R: P! y. M: wSuppose 1-6> 7-12
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6 S# J4 e& V! r1-3 vs 4-6
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$ N4 p' \' b7 X$ T" c0 }: jThen Weight the Third
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Suppose 4-6 > 1-3/ ?  I9 {# z. [% P

2 U1 l8 z+ O& Z" HJust like the first Step! Y$ m1 B2 y1 B5 n. ^; p& l
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4 vs 5
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if 4=5 6 is the fake one * `5 n! S; x* l: f9 T4 i" u
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if 4>5  4 is the fake one
7 H. L- c8 d$ ^; ?2 ^4 uand so on......................

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" K) I2 i4 g; L2 r1 D& o3 d: Z1 Z問題第二步
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- k& m$ H$ h; v1 mWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6+ p% Q! o5 S8 {4 q0 D
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你第三步点去搵 7-12 边一粒???# x( R1 l- C" W! J! u3 V

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+ G; }+ s% A- v5 V0 V" I" \問題第三步# g. k( d' v' A0 D8 V  y

1 ^) P5 y0 }( n! P# w: Y, K5 o0 RWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 $ U8 T( K+ z8 s' _
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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