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)。) P8 Q( h( _* |" R* L
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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4 L9 `; Z, t  ]6 h+ C/ c1. 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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' @/ {% L3 n( z2. 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6 I6 I+ N- A2 |7 O* s9 I& f
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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:
4 S1 u5 s1 U' }' Q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," V6 i* O1 P" x$ E" m
等我搵下仲在吾在7 V4 b& x- b! K% d* z

' S. u4 l3 _! `當日用左37分鐘答１２粒波子，差７分鐘才合格。
8 G" c/ b2 F( T9 @- `) }- ]13.........1 g4 Z) Z: D1 Y: Y. U- e  G+ A

: U5 x) V) P6 P" U# [6 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,
: V! f9 n; A" n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:$ c- l9 z, X) ~! S' U
唔識隱藏...已經諗到..

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sor !!!....e加改左9 @6 E* }6 z% Y+ S% Q& l3 H5 U2 A

3 [+ c) T! d! V2. 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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/ `6 j0 [9 n! X1 G( b) }7 [[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:6 [$ b; @2 _) H1 k+ o' q# J
相信e條題目都有吾少人玩...

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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

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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) A- J3 m) o% _5 S4 @PlayPlay, Let me know later who has the right answer and I will add points accordingly.- @) `4 v8 F* N" g4 ~+ r

+ d. h% e- i1 c  xThanks

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  g& i8 {9 e) J& M9 \不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
9 Z$ S4 p4 q2 P( {) d2 r1-6 vs 7-12; N5 z9 n8 X5 w1 e8 n
if 1-6 = 7-12     13 is fake* |5 d4 k0 E$ Z% Q; a- K" P1 [# q
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if not
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Weight the 2 time
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: K8 `/ S+ f6 I# R; S, eSuppose 1-6> 7-12
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1-3 vs 4-6 6 K* f$ n, H$ R8 b/ C  d. r

; o0 l$ T* v; H" A# ]3 f% N% H; SThen Weight the Third
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Suppose 4-6 > 1-3+ b: E5 z  g+ Z/ ?$ l) ?- W

- b( P2 |% `2 ]4 b5 G* v, jJust like the first Step7 u, K% w9 o, q& M; c% O& q

' F4 A% u2 s! o8 q4 vs 5 . n' e& I' [/ T
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if 4=5 6 is the fake one - \+ i& F9 G+ d8 G4 N3 p2 q1 H

) m0 A5 z' H( F# C+ w8 ~* tif 4>5  4 is the fake one
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/ u2 b* |2 z7 ]( P# a, k* a0 aand so on......................

hello1997

分3組4隻波子秤& r5 H# a$ o# Q8 v
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Group A: 1,2,3,4- h# b/ T4 j7 V4 O
Group B: 5,6,7,87 U2 }2 `" J6 d
Group C: 9,10,11,122 D1 \9 _+ x6 {: g. ~& R
Group D: 13
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Round 18 u0 Q& P+ \6 O  ]# a" [! @: K7 l
Group A vs Group B
9 j6 }3 m; B! b如A and B一樣, 即較輕一粒在Group C or D" ^7 s% z$ G4 z; s( Z6 `
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Round 2
. Z" i5 v% w. |7 L6 |再在Group C拆成:# n9 B2 ~( a5 a9 h; B- Q; w
Group Ca: 9,10
6 ]9 r0 f& C/ Z3 c6 s# E7 tGroup Cb: 11,12
: T7 f* t, ?* `' H1 R5 a然後再秤, 如一樣, 即13為較輕一粒.
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1 }7 D  z) {5 F( g0 J* _如不同, 即較輕一組有一粒較輕波子在其中, % |2 b! d+ c" t" m4 O4 h) a- L( _
要再秤, Round 3, 之後便知答案.8 @$ B8 q. c4 t+ t2 G% N
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e.g. #1 假設10為較輕的一粒
8 o0 M8 ^1 ^3 x8 f" y+ t: h( qRound 1
  ^# j! d& H. Z6 w+ p/ i& ?7 x/ \* C1,2,3,4 vs 5,6,7,8 = equal' _- H. G& ^+ z8 r. V% D* e! F+ T
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Round 2
4 g4 l9 E0 |0 _# N  ~9,10 vs 11,12 = 9,10 < 11,12. y- W7 L, ]! `* e* d+ a
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Round 3
$ R* C: b# z5 x$ D2 h9 vs 10 = 9 > 10
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0 b" y3 f0 e( v2 x# d0 jThe answer is 10./ y1 ^% H  o" R* x: D. B3 z
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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& s1 x0 g4 m( f4 K: {! \/ E" }1 |

& a2 N. [% J! }0 Y2 z" V- uRound 2
9 E$ W; [. E- s. q. _  \! u5,6 vs 7,8 = 5,6 > 7,8- [8 u& n8 `0 Y" k

$ @( t: S. R, ?9 l7 f8 M( ERound 30 g, C' P! \4 p1 Z9 R! v
7 vs 8 = 7 < 8- j% z3 j; ~# ]& m5 j5 \  }

# b" r' N2 e4 _3 @+ y8 V; ^The answer is 7.! E" o/ v- m* `+ D& M8 k. }' i
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e.g. #3 假設13為較輕的一粒4 ]' H% O: r) @# [: x
Round 13 u; B: J4 |) E" E$ v
1,2,3,4 vs 5,6,7,8 = equal2 A5 f  l8 u7 D2 f$ p/ ~

2 B, Z7 T9 S- C  J- h/ T; cRound 29 u+ X, X, B; d( `2 b# C
9,10 vs 11,12 = equal9 N/ C) \. g/ }3 [7 ]

  E! m3 _5 s/ v0 Y# NNo Round 3
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The answer is 13., Y& k# ^; _! G+ @( s! [/ Y

3 l" v  U% T+ a# m/ M8 H1 J唔知我答得正唔正確呢?! 3 n* k" B3 z% N7 q: p

& t/ B+ @. S4 g7 E0 P[ 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 7-122 {8 U$ O- Q& y* q
if 1-6 = 7-12     13 is fake
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  `; A& g: A* ^: N* WWeight the 2 time - H9 v7 k; h8 g, z1 M9 d
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Suppose 1-6> 7-122 {  \' C! o. Y- G
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1-3 vs 4-6
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6 J4 U" ~4 V+ \  Q  f3 \6 aThen Weight the Third
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# y: a% X* G$ l5 e: u/ U/ P, jSuppose 4-6 > 1-37 }% b- x/ y7 h

0 \; A- [5 C9 X& ~: _% w' g- wJust like the first Step
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4 vs 5 % ~& D/ ?+ l8 @: T3 M
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if 4=5 6 is the fake one / V; A# K7 h3 l6 ?+ C  F0 w! f" _

7 m$ g8 U: P4 G2 _( A! Nif 4>5  4 is the fake one ' Z- _( I9 Q! u; A* |4 t
and so on......................

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% r0 b& \- Y) e3 @4 E& B% x, p# j問題第二步! Y4 X# r+ F3 C( v$ ~7 e0 ?
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Weight 1:  1-6> 7-122 W- \1 [0 K) F, ]
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6/ @8 Q' q+ ~+ _8 I3 j
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你第三步点去搵 7-12 边一粒???# R' [! q9 t* y! n

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. h2 G& ^! _7 B. O, w問題第三步1 [8 W4 Y+ m' m, r" W$ G

: j* ], i) R2 ^) O. k  {Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 ; [* e4 s9 b% n5 u
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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