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)。
, i  J( t, \' @8 C# M9 r# U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？』! n4 R! @2 i7 i' q
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注意:
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& o. j. h* n" X! ^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
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* s5 G( z8 C& U2. 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 v& l/ E; w' S7 ]相信e條題目都有吾少人玩...

- j" z; i- P& V8 G3 i" i我以前畫左個chart去答,1 b6 }, y; |8 t4 ]3 _, t
等我搵下仲在吾在$ q2 {+ c( T- Z, W  G* c2 U
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當日用左37分鐘答１２粒波子，差７分鐘才合格。& ?' G$ g6 M1 Q  u3 x' {9 |
13.........
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* n) c( V' p4 f# I$ Q[ 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,4 T8 \* a( |( f
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:
. S3 S& S9 `" W唔識隱藏...已經諗到..

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) J+ N4 v7 z4 K+ f5 N1 p6 psor !!!....e加改左
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2 Z6 y+ G0 h+ a+ Q; i2. 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( w# X! \9 `# k! A* E$ s4 d

* S' B# {1 \0 u. g[ 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$ S9 G/ k0 C2 g, q* q7 j
相信e條題目都有吾少人玩...

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, `3 x! @5 e, u! ?PlayPlay, Let me know later who has the right answer and I will add points accordingly.2 d3 x% O& X# x3 Z, y6 q) S
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:/ [  d' r5 n  X4 Z9 e8 P' Z4 V& [

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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.
* v" C: A6 Y8 }; u/ k9 B4 m1-6 vs 7-12
1 L& h" _$ `  X" [/ L4 p$ Wif 1-6 = 7-12     13 is fake, \% e4 C$ V9 W0 W0 _4 }

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  w( s' Q9 w2 ]; KWeight the 2 time
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6 v! u" z3 A: P2 p" aSuppose 1-6> 7-12
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: q% E: G5 s+ }3 E1 l1 W; w1-3 vs 4-6   F1 r( ]) \5 z) x& g* n# p( y% a

( |" d6 }) X2 \Then Weight the Third  u; A8 a& S9 |, {- c
3.
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Suppose 4-6 > 1-3
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Just like the first Step6 w. y  H' ?: I: J

2 z7 Z7 t5 L; d0 E4 vs 5
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if 4=5 6 is the fake one 1 T' N5 s6 h( d% T
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if 4>5  4 is the fake one % J5 J5 ?( P) Y- O
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and so on......................

hello1997

分3組4隻波子秤1 {( ]% ?% g1 x* N+ X' R

" [% B2 O. [5 a2 n) t: FGroup A: 1,2,3,43 `! E5 i; \) I( Q
Group B: 5,6,7,8
8 ^' @! L' l' n  }9 cGroup C: 9,10,11,12
5 H" t/ T$ K( L; ^1 MGroup D: 13
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Round 13 b! a' g, o! Q' |4 q+ d! Z
Group A vs Group B
+ C( H' ~7 G* f8 p如A and B一樣, 即較輕一粒在Group C or D
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5 w9 @. j, M  `4 g% M; Z6 nRound 2- S$ W. b3 _8 q* W  V- X
再在Group C拆成:
* _% [. L/ K+ N$ R6 Z& f4 iGroup Ca: 9,10
9 B! ^% Z6 ?0 h, f8 f9 r. KGroup Cb: 11,12$ Z1 |6 q- C! B
然後再秤, 如一樣, 即13為較輕一粒.! `4 P2 V. y0 O; E  e: w

3 g8 K  D2 `3 L" {! e% m如不同, 即較輕一組有一粒較輕波子在其中, 5 Q* @7 ?4 |' D' K  o& j' \! L
要再秤, Round 3, 之後便知答案.% Q" r$ q, i) \" N6 P. Q& \
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e.g. #1 假設10為較輕的一粒8 [3 q- B+ ?' O- ?7 T$ N
Round 1
5 |' v0 F5 H# v% n+ a$ _$ }% Z1,2,3,4 vs 5,6,7,8 = equal
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Round 2
- [4 o! t+ b' v* [9,10 vs 11,12 = 9,10 < 11,12- n* r9 ^8 w  U. Y* v) d" {
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Round 3
* o3 Z4 ?9 `2 h% ]9 vs 10 = 9 > 10( n( m! F: d) s" _6 i, S. X! }
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The answer is 10.
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e.g. #2 假設7為較輕的一粒
6 C: V/ K/ l' iRound 1
7 N* `1 J6 U( K6 B8 e- Y. w% E1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8! W& L: l9 Y9 A' y# J0 e
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Round 2) y8 n# V8 f; f, Z1 L6 U, N% j
5,6 vs 7,8 = 5,6 > 7,8
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Round 3, M# J2 p3 x: B, R  V' M) K4 e
7 vs 8 = 7 < 8
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The answer is 7.& V( @# Y6 B$ \9 G; d

4 g( g+ C& u4 ]! a! pe.g. #3 假設13為較輕的一粒
8 ?+ Z9 }) F% qRound 16 a- |  g9 z0 K# J
1,2,3,4 vs 5,6,7,8 = equal6 V! q5 z% C+ @- T- [4 e* u3 @

4 A5 o% K4 m. jRound 2; [* J. x/ l# K4 T% B* @% g! c
9,10 vs 11,12 = equal
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No Round 34 c. e# g0 j" l) f% w* x5 Q; N

4 F6 m2 Z0 D& d- j9 wThe answer is 13.
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唔知我答得正唔正確呢?! $ @* x0 e% V/ F6 h, ?) ?/ e( o
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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:& _( g5 g2 w) [$ N5 F5 V; N
1.
6 E: U+ E- k5 K2 R1 o! f! W1-6 vs 7-12
$ e3 V( w( L+ z' X9 B% D( kif 1-6 = 7-12     13 is fake# k, ]; f. ], N  W& Q
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if not ! |# }. ?( Y* O. q
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Weight the 2 time
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Suppose 1-6> 7-12$ |6 e7 }/ ?# x* `6 V
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1-3 vs 4-6 4 ^. ^# Q! v1 ]- F0 K8 l
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Then Weight the Third3 d, Y$ U$ U! `  d8 H$ D. c) _' r8 K
3.
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* \, Y- O# k( c9 jSuppose 4-6 > 1-3
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Just like the first Step
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6 y/ [4 l0 U! a9 B. o1 B4 vs 5
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" C4 V- m, V+ L7 |8 L( ^. W7 K- z; E+ ^if 4=5 6 is the fake one * G$ a- b- j7 w1 G1 _  b2 H

2 R* s& w+ ?" uif 4>5  4 is the fake one 4 Z; T7 ~  `# p" ?6 s
and so on......................

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  d- o( L5 j- {( y# ^6 e問題第二步! F5 h  ?4 _0 P: s/ c4 o) ~3 A
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Weight 1:  1-6> 7-12
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/ N0 z* w! e7 f  u0 R# R' g  jWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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- C; ]( `3 j6 P你第三步点去搵 7-12 边一粒???" Z+ D. T  _" o& b9 g

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& a3 ^/ _4 }+ Y) W+ a$ q; f2 A問題第三步
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1 B9 X' M: L" k3 t/ m& }Weight 1:  1-6> 7-12
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% N3 V  I: h7 c; JWeight 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