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6 }/ q( W* Y# f' x' n3 p, w" A7 ^

8 T$ E4 Q* j& Y( t: q, G『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)。4 N* T- h( n. c( v7 E, W7 }
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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+ l" d, t' k, @6 R" V, C: w$ O注意:
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; m0 ^  Z$ W( i6 D1. 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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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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$ j* `6 Q  ^7 j' j+ U1 R[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:+ j1 w: i" C2 ?
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,
' |  I  e  a/ ?4 ~等我搵下仲在吾在  a& Q, ~: O  q- ~

# C& m, @8 A! f! v# N當日用左37分鐘答１２粒波子，差７分鐘才合格。
2 o8 L9 ], L( }  ~0 _2 d4 N13.........$ r) b( y; N  |9 ^8 e
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[ 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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7 e7 T6 [7 f4 i8 z2 `# ^我以前畫左個chart去答,& M/ @. I; Q0 \+ c
等我搵下...

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: l$ b: w% |% {( E9 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:1 R. [! w2 `! n/ S1 h
唔識隱藏...已經諗到..

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: c" E0 `. M: H. r  msor !!!....e加改左3 [" }$ W1 r! _( y

9 |: ?( W& G, N: @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
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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:
7 f' g+ G; N7 S# `1 z4 R相信e條題目都有吾少人玩...

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- a3 P2 q# G6 a( w2 ePlayPlay, Let me know later who has the right answer and I will add points accordingly.$ ?: X: n6 ?; Q4 i: j' h7 A# g" w3 p

6 \4 T0 ?+ E! z7 P& Q+ ]: t0 lThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:8 X3 l. c$ g: b( z  i. @* h* ^
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; t0 I+ x% K) E+ PPlayPlay, Let me know later who has the right answer and I will add points accordingly.% i7 _5 ?9 f: B4 k' Q
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Thanks

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9 b0 Z& _8 _* ^7 O& x不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
3 H! w1 y: X: B8 M9 Z: E' x6 |1-6 vs 7-12
5 J. A9 P5 ?4 y- a4 }: I& Wif 1-6 = 7-12     13 is fake" I: s* w, _- d3 N3 @
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if not
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Weight the 2 time 1 w5 h5 `5 K# |% v/ G& P

( q7 h$ q0 r0 w8 P. ~# [! OSuppose 1-6> 7-129 c; h6 A9 d9 Y: P/ [1 s

" @) i! m3 I2 V: g1 C' j- I- I1-3 vs 4-6 . |8 O6 X8 Z& U2 D, ?
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Then Weight the Third/ [' @3 i! B: [% f
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' _' W, D8 R6 D+ C+ o& xSuppose 4-6 > 1-3
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9 C. _9 f9 L5 r. d, gJust like the first Step
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# ]  }7 C& v  Y' ?: l4 vs 5
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  e- Q9 O" b0 Bif 4=5 6 is the fake one
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! V- x8 R# ^8 j' e! c2 W  \if 4>5  4 is the fake one 3 J: Y! k) f* G( ~, o% o) s3 p
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and so on......................

hello1997

分3組4隻波子秤! z% a  E$ }+ E% i% y. E  F  S
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Group A: 1,2,3,4
! T( q8 S5 {- y9 u! ~Group B: 5,6,7,8" ?" w# y! ~  ]" h' I. L0 _
Group C: 9,10,11,12
. h' a' a2 I7 i' \5 `% LGroup D: 13
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% `: T+ @, f3 z" dRound 1* d: S& n0 B6 u( x1 ~" ]
Group A vs Group B$ y# y9 K/ a& ~8 K$ ^9 E$ W
如A and B一樣, 即較輕一粒在Group C or D. i$ [# |5 a) b; w

& M0 J- q1 J2 t  A. E1 _Round 26 T" e2 ?: b  |$ e3 d  w5 e
再在Group C拆成:
; R* S9 F6 q8 k5 @% z; ZGroup Ca: 9,10" G- t/ @; y, g& B# M
Group Cb: 11,12, c- G& Y9 {% M
然後再秤, 如一樣, 即13為較輕一粒.
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3 r8 ^! f9 F* s$ ?5 L0 }" J% k如不同, 即較輕一組有一粒較輕波子在其中,
( V# M: f$ Y( ^6 J  i0 ]0 m要再秤, Round 3, 之後便知答案.
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. z& }  g3 L. A1 U. Ee.g. #1 假設10為較輕的一粒
& ^( I' m/ H* M+ U+ f. s9 Y; jRound 1$ s0 n" L& v6 G3 U/ ?* k% E
1,2,3,4 vs 5,6,7,8 = equal& ?0 ?; E/ e" `. m

& P$ ^- I" B5 l' N0 C* q, WRound 2* e9 ^) S4 r% q! @
9,10 vs 11,12 = 9,10 < 11,12
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0 I, Q# r% `5 s8 `" O- o, }& DRound 3
$ t+ l! r, {+ X% b1 W9 vs 10 = 9 > 106 k4 L4 N/ `0 Z/ P+ P
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The answer is 10.
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e.g. #2 假設7為較輕的一粒
  \, r! E' x1 Z! oRound 1# J) h- k( w9 |
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,87 `: d, C- n# U( K# v' k

" I4 T7 `" |8 r1 P9 f0 y( iRound 2
! o  k* ^( f( |) |/ H& L; g5,6 vs 7,8 = 5,6 > 7,8( [" i# ^5 Z" s/ [
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Round 3/ h( @: r, ?+ X# j$ b' ~3 I7 A
7 vs 8 = 7 < 8
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The answer is 7.( t- K+ d! \* o& f
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e.g. #3 假設13為較輕的一粒
2 _  q. o- B7 }( i2 HRound 1
. g! v9 b1 t  F& k1,2,3,4 vs 5,6,7,8 = equal
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  @3 L8 w, }+ C: ~Round 2
. Z: z3 X5 W  q( s& t9 {& B9,10 vs 11,12 = equal9 E9 J  V" X1 B, o3 V) d
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No Round 35 q  }$ P9 t2 e

: [: g, \5 @: G' ?( yThe answer is 13.
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; \  A8 o" t8 j- P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:* K6 F5 |3 F" S( a$ K! n# T
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1-6 vs 7-129 Z% E" K9 K7 ?
if 1-6 = 7-12     13 is fake
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7 p- ^0 k. _: S5 {* S  Nif not 7 {$ Y3 a4 V) g$ H8 [, a. T! r5 t) |# V

# E% ?& w$ M$ ?0 d$ yWeight the 2 time ( M5 E& }3 K; E- ]5 [3 D
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Suppose 1-6> 7-12. s7 z& Z6 V( v+ a& i. g* c

4 ]' m! e6 F5 V; \1-3 vs 4-6
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+ o& J6 f- H  F- g, m& ^5 J" x8 BThen Weight the Third
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Suppose 4-6 > 1-3/ b, v1 k2 f3 i2 P5 f# K
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Just like the first Step3 w" E" Z, w( [! V5 f1 W4 r. `  r1 w
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4 vs 5   j5 z- D3 J# O: Y1 Z/ h/ D9 A
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if 4=5 6 is the fake one . D( j3 |5 y& w" {- o% r
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if 4>5  4 is the fake one
3 D3 `5 }% Z9 d+ qand so on......................

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. ?6 i) C  ?! I. a- M8 G) G: I問題第二步
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/ ^5 }+ B9 A0 t- M; a% oWeight 1:  1-6> 7-12+ d' m, m; m( b
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-61 M9 ]( v; P0 v; j! I1 @" s

' q  v! [: Q+ G4 r/ Y. v3 R! |你第三步点去搵 7-12 边一粒???
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7 r( [5 s1 ]  i1 h1 x$ I& D========================================
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, T. ?. R/ C' A9 h- G/ r' A( B問題第三步+ T- R* K& f, x% _4 C4 t) e/ v
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Weight 1:  1-6> 7-12
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( m7 F/ `8 p) ~$ x6 JWeight 2:  4-6 > 1-3 ' ]- p* n: N3 S! K$ i! \( t( \
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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