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)。
1 U3 C" \# S6 F- }# ?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: ! r6 ^6 ^8 j8 K$ b; B

' x) f9 G! n0 V- h; c. u  f; K3 A1. 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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8 \  g9 M# v0 r7 `7 l  x0 o2. 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% @2 N$ s7 X6 r3 N( ?+ N% @
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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 y( l3 @- K, g5 A相信e條題目都有吾少人玩...

5 K+ x- w0 n; ~$ p我以前畫左個chart去答,1 F- H0 ?5 F+ _4 y5 h
等我搵下仲在吾在4 [  |3 C. E7 o) s
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當日用左37分鐘答１２粒波子，差７分鐘才合格。" \8 b2 M, ?; H3 X
13.........
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  S' ~/ `/ Y4 p" R[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:' Z2 @8 K/ Z* ]7 }% Y+ T

1 y+ G7 B; p0 |- o% t: X我以前畫左個chart去答,5 N8 I3 S6 L2 |: I
等我搵下...

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, o9 u5 `& v! o1 l+ Z& X" {3 N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:' r! ]- R3 [: B5 N3 p
唔識隱藏...已經諗到..

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9 n5 d% D; c5 h! }. _5 Wsor !!!....e加改左
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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
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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:2 U5 C) d6 \8 m- ]! {
相信e條題目都有吾少人玩...

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( j+ F( Z# I; N" o  S  L* ^. @PlayPlay, Let me know later who has the right answer and I will add points accordingly.7 a* y! s4 g" ^0 q% v7 X5 t

7 S& {  M/ ]% L4 W9 dThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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; Z9 p7 P2 _+ VPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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6 z) g9 O6 J& U6 o% h* KThanks

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3 \/ ^( K& }, C  ]% n8 H1 y# X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' t- \+ l# g. w6 B
if 1-6 = 7-12     13 is fake
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if not
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. e+ z% K1 G1 |  r1 ~Weight the 2 time 4 s4 k) Q2 }+ v$ ]/ D$ B" b
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Suppose 1-6> 7-124 c9 l1 B/ ]  _' r) N5 A0 Y
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1-3 vs 4-6 & j5 j( v* x6 m+ w9 @9 p

& Q! r+ Z) [1 h. B  G) V; lThen Weight the Third
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: h! w' ?; n" c5 p% xSuppose 4-6 > 1-3' h: H; M# m, w! k0 U8 f

, {; R: M! `! Z( O) @( RJust like the first Step
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" X3 a, P3 ?/ ]9 @: }4 vs 5 8 w2 J6 i; b$ u/ L

, f) Z9 ?; g4 A' {7 Q; P9 Hif 4=5 6 is the fake one 0 Q, U4 i6 P/ N( U- ?8 ]

$ o+ u/ H. g& i+ C' P# C; |& \% \$ X' yif 4>5  4 is the fake one * B4 g5 V5 j' w8 l% {

7 [/ t& u- s- G) band so on......................

hello1997

分3組4隻波子秤3 |1 a" Z8 e' d- x

; S# T: I4 j4 s2 `* dGroup A: 1,2,3,44 z$ g7 L, V0 l6 p, I& ~# y
Group B: 5,6,7,8
* B. h9 u% l* U& B& q% AGroup C: 9,10,11,127 s- W' K5 p+ y* v* M# {
Group D: 13
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: Z# r! R, [" eRound 1
3 P$ K, P9 k. u( _/ dGroup A vs Group B, h( U8 ]% F4 D+ G7 A  _
如A and B一樣, 即較輕一粒在Group C or D
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Round 2
( `% ~  [7 |7 q2 h  @: K再在Group C拆成:3 V  B; q! s& [+ {& B+ M
Group Ca: 9,10
$ v; t' s8 g  a$ O0 sGroup Cb: 11,12& q6 I. i0 q' Q0 ?! {
然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中,
# i7 c4 {1 I4 [' Y要再秤, Round 3, 之後便知答案.2 a+ m5 E! z+ J

! ?  C# I8 H: d, A  g- B4 b1 {e.g. #1 假設10為較輕的一粒
5 O$ Z7 q1 l( W$ K- p0 j2 p  KRound 15 A& h- h7 W7 I) A+ N4 H4 j% Q
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
5 t. m" Z8 _( J4 `8 Y8 r9,10 vs 11,12 = 9,10 < 11,12
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Round 38 W3 p+ V% e! c3 x' S! B
9 vs 10 = 9 > 10
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The answer is 10.
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e.g. #2 假設7為較輕的一粒4 G1 L; \! X0 l# X) F
Round 1
% X( _, i. i% F( w5 d1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2$ ?+ d- N4 I+ ^
5,6 vs 7,8 = 5,6 > 7,87 _  {7 i( v7 p1 z7 Q" Q2 d# X

% z" t: z) N6 d! zRound 3
4 X0 ~* U  L: b+ {" S  V% n. Y7 vs 8 = 7 < 8
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The answer is 7.
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* j5 c; t, H6 B" U' K3 M2 De.g. #3 假設13為較輕的一粒
3 E& g' h; y. [1 oRound 1# B8 D6 P* C+ K% e* _7 [, {
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
  m( a3 P' f: k  L1 i6 h; O: R9,10 vs 11,12 = equal
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. B5 ], u8 c! A' b' h# uNo Round 3
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; S# r: p0 _. }- y7 PThe answer is 13.
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' Y( [: ]6 ]/ O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:+ ^/ M$ b& J0 H/ l
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5 ^3 n. N1 V' q& H6 r8 n1-6 vs 7-12
% B8 {) S, p/ T% Y# R" a+ `& _! m: Zif 1-6 = 7-12     13 is fake: G6 g1 d$ V3 b6 s6 a; X( P( G

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Weight the 2 time
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" l5 @+ Y9 W/ ?0 L. x; L! ESuppose 1-6> 7-12
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1-3 vs 4-6 5 a  h; [( J/ z  O; G  G$ M

8 W' p% K* ^- N9 k  S" oThen Weight the Third8 M2 X/ R4 A) `" ~
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) d$ K& h2 Z8 ^8 E- N9 L- R; zSuppose 4-6 > 1-3
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2 h& L' F; y% ^# A8 j1 g& oJust like the first Step5 W! _6 G+ B2 m, b! x8 j( x1 N

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) A( o; v+ Y+ ~; ~8 d0 ^) l1 @5 z9 nif 4=5 6 is the fake one % L0 [/ b; |+ G# W7 ]7 i1 ]. H

5 i, _2 I# _- g3 x4 ^) Uif 4>5  4 is the fake one 8 I: `) p8 w) i. h1 [
and so on......................

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# V. e& b" }) w. {問題第二步. f6 G6 U) w, z; L4 ]
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Weight 1:  1-6> 7-12
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9 C* Z  j5 V6 uWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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  ^/ i3 \& t) o! {3 \' N. Z$ L' D/ z你第三步点去搵 7-12 边一粒???# K* ^3 R4 Q( p* X3 a
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1 R* n7 [0 i# O+ t問題第三步. K0 ]* k5 d0 g5 r

. ~; a3 P  N8 E) o/ H7 i; z' k! B9 TWeight 1:  1-6> 7-12. r. l; g: p$ J3 v: y
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Weight 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