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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- k8 X  m. i+ V7 w! f4 e* P『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)。
8 E  L9 ?6 r+ A4 M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？』: C% m# e' |: V( L

4 M6 m3 Q  G  C5 p" }3 o0 i注意: 2 t7 _/ p$ }& U6 @5 v6 P
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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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6 k5 E8 a. `# W( _# ~% T5 |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* d8 `$ i' |, R1 o# ?0 N; V

6 a5 u: b* U2 Z. K* F* T" K% C8 n[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:$ P1 l$ l% Y# x  g
相信e條題目都有吾少人玩...

* G4 P( L+ p9 y* `我以前畫左個chart去答,
: j& f& l' u% y: f1 T% p等我搵下仲在吾在* j- v: d" C2 Z' z4 y1 ]
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當日用左37分鐘答１２粒波子，差７分鐘才合格。/ `) Q5 Y1 h6 W5 O" n
13........./ p  U; K6 E" Z+ A  q. Z( u! B

/ B+ l, w$ R! R: C: {4 I+ Y[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:/ V1 \* e  y, L6 H

/ |; E- X5 M" V/ X我以前畫左個chart去答,
: e( k5 x( v& }. A. s等我搵下...

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$ N, D. X4 r+ n& B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:
2 X- t& R2 U9 z/ m7 l! w' X唔識隱藏...已經諗到..

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sor !!!....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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; k9 X" E: M. o% s# @) i[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
0 z1 g; P6 h) \. P# ~相信e條題目都有吾少人玩...

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" n4 _5 i+ w& R9 S: I3 tPlayPlay, 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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' U3 t) J3 j' F7 O- j) l" fPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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# o# N  \" S% i, S# @8 [' {5 GThanks

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' H' Y: U% s+ R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; C! `& L6 d, I5 S
if 1-6 = 7-12     13 is fake
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if not 4 j+ l/ t0 q' a) b3 U
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Weight the 2 time
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Suppose 1-6> 7-12
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$ b, s- h( @$ ]1 E7 C* E1-3 vs 4-6
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) E: \; e; M  h. A. [" OThen Weight the Third) g  U; u+ U/ R# C* o
3.
. h6 }8 f0 y2 \" ~: w2 q! @6 Y% ~
Suppose 4-6 > 1-34 A  I! y4 W; Q( R1 B

8 I( H/ J: ~7 S7 FJust like the first Step) N! F% c! W/ m) r; X6 c9 E0 f
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4 vs 5 & c2 H/ {! ]* q7 }

" v: I. u" {. t5 Bif 4=5 6 is the fake one
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if 4>5  4 is the fake one , p' P& k$ s' ?* j* A
7 [6 I5 v: ]3 a  V0 a0 n3 [
and so on......................

hello1997

分3組4隻波子秤+ W0 E; @7 @& E8 c0 |  ?
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Group A: 1,2,3,48 K$ k7 J1 T! T2 B8 p
Group B: 5,6,7,8
7 l9 u$ w! Q) c, eGroup C: 9,10,11,12! N5 }/ ]; y6 @4 l3 \5 ^
Group D: 13
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Round 12 m- f; S# n) [+ C3 G8 B7 I$ o4 o. I
Group A vs Group B
, L7 v; K  J' _8 a/ K如A and B一樣, 即較輕一粒在Group C or D' B2 q9 n  z5 o! n" c
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Round 2
3 Z5 h; r. ^( u, S3 [- o再在Group C拆成:  h  f5 ?  N" U: T9 G# S
Group Ca: 9,10
5 g1 A  R- a4 w0 t" CGroup Cb: 11,12
( o: X$ y/ R% o$ g  [# g5 D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,
# W* q6 r- o7 f' a; {& N4 K5 B要再秤, Round 3, 之後便知答案.9 w( j" [0 `7 T- D4 o+ u
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e.g. #1 假設10為較輕的一粒
% I! r% s$ R' [% s" o# kRound 13 R" D- d: R4 Q
1,2,3,4 vs 5,6,7,8 = equal, W; Z' w/ S0 o/ d

0 r' E# x$ x5 h1 fRound 2
7 I3 k/ ]+ M0 F7 l9,10 vs 11,12 = 9,10 < 11,12
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Round 3
7 \& v( _, p; E; @: |9 vs 10 = 9 > 10! \- B! a8 V+ a) K) h8 C& j5 C
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The answer is 10.
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e.g. #2 假設7為較輕的一粒! D# h# u9 F0 y+ ~+ t' X
Round 13 K" \- F% b2 L9 O! |2 P! Y
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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/ @) g" p, ]1 T9 ORound 2
! R' W, Q. C2 L+ K. R- _5,6 vs 7,8 = 5,6 > 7,8
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+ N$ t; G( n+ f' s/ L! YRound 3. l, ]8 g1 h) ]9 W; Z; {
7 vs 8 = 7 < 8" L3 H) ^% u' r9 U8 L! }

- \# s, B7 V0 U0 }3 }The answer is 7.
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4 r8 d. B5 B/ \% y3 X+ S5 f: L" le.g. #3 假設13為較輕的一粒
3 \8 F2 e# }5 l/ a5 g/ tRound 1
) y9 Q; \/ z+ a, B3 S1,2,3,4 vs 5,6,7,8 = equal9 D) x/ I" j/ g# ?% `/ a
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Round 28 l+ h, D/ L4 H& j/ ]! Q
9,10 vs 11,12 = equal/ l9 ]6 c8 `  O5 R$ w" v

7 }4 p, s3 a3 C! ONo Round 3
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The answer is 13.
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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:8 l: O1 l$ J5 [/ I3 ]8 J3 U: q* V
1.
. e0 G6 V: ^: \! H4 x$ x3 X1-6 vs 7-126 L" \8 ]1 W+ m$ i! z! ]
if 1-6 = 7-12     13 is fake
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) A3 v  t1 I+ ^0 Kif not
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- V  t' ?: @/ `; B9 A8 bWeight the 2 time
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Suppose 1-6> 7-12' t% m' F" p% v, D

! z" L4 H: v; _; C$ Q, e1-3 vs 4-6
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: c+ Y1 w1 M7 `7 A8 W% N% S  V5 |Then Weight the Third
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* |) n$ }* B6 p0 ?$ hSuppose 4-6 > 1-3& T* ]# l9 P2 b8 h

1 y* D; p% ~( s" X4 a" XJust like the first Step
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& _2 u- ^5 O' c' Y7 F4 vs 5
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# v0 @0 o2 Y  R$ p! I  l+ q1 K8 a) Cif 4=5 6 is the fake one   E, b: W3 k7 P/ [3 A
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if 4>5  4 is the fake one 4 B+ t# s9 F" c# B2 V& _8 ]
and so on......................

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; s: B+ A% x, J0 v問題第二步
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" T; }: B, [  E  S6 @5 O$ w1 cWeight 1:  1-6> 7-12
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Weight 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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========================================
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問題第三步
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' W3 I! Z; C- ^3 M) _% y3 B) bWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 5 d' g+ u+ C* M# p# B4 c; X
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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