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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! s% g- M9 x. `/ l8 R+ Y『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)。
( J  o% X6 k( _8 l& U: D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？』' @* O' ?" x7 P* O$ t8 F
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注意:
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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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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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  E. M( X  b  |0 s[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
" P9 F, z$ t4 o- S7 Q+ c$ f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,
; ~1 }+ P4 @5 |* J' l等我搵下仲在吾在
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6 z# L3 [0 b  L當日用左37分鐘答１２粒波子，差７分鐘才合格。
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# a% L' g+ U) o: _; r% }( @/ m[ 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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: ?/ \( b2 j* e( z% ~我以前畫左個chart去答,3 |3 |  ~- Z. I' A. [
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:
3 {2 [) x+ W% H3 ]$ i9 U. |* s唔識隱藏...已經諗到..

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2 O5 \" n# B' B9 x' hsor !!!....e加改左
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; z) y3 i# p7 a5 J1 Z+ J2. 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. ^" W0 O- W: L
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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:9 p' Y; j) m. ^) ?* K; Z$ z
相信e條題目都有吾少人玩...

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0 E% B) H- ~  s% C* 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:9 Y: V  m( v+ S; {
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" m$ x  j& U# @; r  KPlayPlay, Let me know later who has the right answer and I will add points accordingly.8 ?3 q( ]' k8 r* Y

1 `9 G- N* [0 {8 Q  c) {Thanks

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2 e% _4 a5 N/ n" e1 B2 l) w; l不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.7 [' {  O( s0 W6 o; u2 H
1-6 vs 7-128 D( i3 i# i5 _' ~% t& U
if 1-6 = 7-12     13 is fake( F+ D" T' j( r% W7 e2 _: a: f
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if not . ^& w. r& N4 e+ h. W. V: V; h

  a! w( w, N" {  d2 pWeight the 2 time 0 R0 T" O" U( Y/ C" e

3 }" E% d" x2 u" NSuppose 1-6> 7-12/ c- D6 t2 Q# M- Z' {$ s

! i( h: G9 n! ^7 h, K  O* Y1-3 vs 4-6
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Then Weight the Third4 }7 l& q+ N& N; f
3.
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% Q! g4 M1 b) }( o5 ^0 i9 l. x6 m" RSuppose 4-6 > 1-3$ E; |' ]9 Y& e6 B9 D: D5 r
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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 ) ~+ b$ {; m) t
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if 4>5  4 is the fake one
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! q8 N% Y& i4 J9 q  v7 Hand so on......................

hello1997

分3組4隻波子秤* u- l2 \+ Q' h9 k; @; T

4 a+ R8 H! w5 L2 c: P/ WGroup A: 1,2,3,4
9 m, @# o5 Y! a# AGroup B: 5,6,7,8
1 O7 O9 L" S4 HGroup C: 9,10,11,12
% W5 s2 |3 W0 Z3 H4 w9 D2 R) nGroup D: 13& T* h' H$ R* U$ u7 [, Q
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Round 1
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如A and B一樣, 即較輕一粒在Group C or D) ^( ^2 U: c, M2 x4 u9 c7 p$ |# Y) b

2 Z3 |! W( m  Z! O3 Z+ rRound 2) q, _0 T7 I# V% ]5 a# U+ ~
再在Group C拆成:1 X$ w, P5 n/ d# A' z- z; ~
Group Ca: 9,10
( J; }$ l* |& E6 hGroup Cb: 11,12& n0 s. m1 f: R
然後再秤, 如一樣, 即13為較輕一粒.
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) P1 g  V5 `3 V$ Q. d0 c如不同, 即較輕一組有一粒較輕波子在其中,
  n& u, Y( g1 q* W2 R) L7 F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
& |, k7 [; G; XRound 12 q0 W  e0 |- [: j$ ~: u. g
1,2,3,4 vs 5,6,7,8 = equal" z. d& h0 K3 Z6 N$ l

! W; l& c) o% ?3 CRound 2
0 N' A4 t- d' H9,10 vs 11,12 = 9,10 < 11,124 y; N( a, C/ ?$ x' B
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Round 3" B& X0 }) k: p# G
9 vs 10 = 9 > 10( F+ q* p2 o! v2 m+ ^$ F( }9 H

2 m% t6 I/ I5 n0 L( wThe answer is 10.
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e.g. #2 假設7為較輕的一粒6 C- u8 H9 G  o8 e/ h- R  q
Round 18 f# R/ f, R8 _8 j
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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3 v& S! z! F, \* D# U! RRound 27 X$ Y' w, z1 O( `' N, a2 y
5,6 vs 7,8 = 5,6 > 7,89 \+ r. P; f! B6 `- S8 a

0 R$ S" [4 L# r: J# p9 w3 LRound 3
1 U6 d* y$ ]" ~2 z7 vs 8 = 7 < 8
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The answer is 7.
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e.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal
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9 |( _6 N9 P" Z& u* JRound 2
/ T' s8 \, r5 F, f7 j9,10 vs 11,12 = equal  S7 g" ~; \- N- ^6 ]
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No Round 3
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The answer is 13.
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唔知我答得正唔正確呢?! : J3 M% v1 k# W! s, L2 m

* d2 w' H* K9 d! G; w3 X& h, P9 W[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:* V# o1 ~9 {: {+ F3 U
1.
) F8 U$ ~+ f- d1 N$ J0 e) K1-6 vs 7-12! u: V5 n; x- ^/ J$ k/ G5 b* F
if 1-6 = 7-12     13 is fake
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Weight the 2 time 0 q/ s& {* N% o# X7 T

; A, f, f8 }+ V/ S  [8 ^8 S5 R1 mSuppose 1-6> 7-12' ?3 p1 f+ L) M# j: A$ v1 @

) K0 h+ |* R% m# U1-3 vs 4-6 ' Q# [6 C& W- b/ d2 k5 G
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Then Weight the Third. F9 i6 ^6 F3 E' d1 r
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Suppose 4-6 > 1-36 j' R* ]6 l( H3 w6 I& \
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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 : A) d2 G" U: O2 Q! x8 I7 ^9 U; c
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if 4>5  4 is the fake one - I/ |) L8 E0 N# S- M8 K
and so on......................

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: B; w1 D: s2 v% r( X0 ]$ H: e問題第二步
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Weight 1:  1-6> 7-12
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  |. w3 F8 B! E3 A) s3 L# zWeight 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???
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7 e) P2 a% p9 V========================================
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問題第三步  Z/ n# s8 M# F7 H1 a
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Weight 1:  1-6> 7-12
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: ~/ g! y( w% m, b4 A+ pWeight 2:  4-6 > 1-3
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5 h. S8 ]+ U- n- n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