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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0 _( `) U6 @! ~! o; K# i『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)。
3 u) Z/ D$ B" `" C5 {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？』. {/ I! {& {9 ]3 |- J. {
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注意:
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/ u0 x% |2 Y6 I4 z% K0 X1. 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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& [4 b: _. F5 F3 W6 h6 q2. 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) s4 x6 {2 X0 P" ^5 I; U

. ~! |6 |* p6 J1 @( M[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:, ]4 e# x$ [7 S2 S% l) w" y, m2 C
相信e條題目都有吾少人玩...

0 v( s2 n; r) t* C3 @' `我以前畫左個chart去答,, P* X7 I& @3 N( w; ~# |. V$ w2 d$ D
等我搵下仲在吾在
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
0 t" \6 h- W' X& d0 B) P13.........
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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:: B% ^! L4 N7 C5 u, T% i

/ v3 |9 V! l& U4 g# E& V! j我以前畫左個chart去答,
7 }- q2 v% X" O$ M/ l. s' `, p' S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:1 a3 k' R5 Z' F, ~6 k
唔識隱藏...已經諗到..

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: p+ F; T6 H6 G! D. a- d) u' Jsor !!!....e加改左: M- I0 f3 r1 F: z' m

5 _$ J+ a7 Q& B6 }% 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
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0 s- R7 ?2 Z6 E7 {4 @[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:. L+ i/ L6 a  t% J; M4 k- }
相信e條題目都有吾少人玩...

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PlayPlay, Let me know later who has the right answer and I will add points accordingly./ y) P. G! z. k0 O
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:6 [- V6 Q2 I/ {, c% E& [
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; O# J* I( n7 A; HPlayPlay, 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.
6 L1 H5 C; H& V8 u* F1-6 vs 7-12
2 ^. M5 N1 i4 w, J+ e3 M& |: Uif 1-6 = 7-12     13 is fake
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if not 9 [5 r+ B: ^5 L- }- o: q

+ l- {9 W0 P& q! n' JWeight the 2 time 5 b  n8 ~: T1 y$ X( X, |0 i# F
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Suppose 1-6> 7-12/ y0 o3 Y4 v" ~7 i
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1-3 vs 4-6
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5 d  ]/ W# u/ |1 z  A  I( c* B; KThen Weight the Third
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Suppose 4-6 > 1-3: U! f3 G5 i. f' D# s1 S

0 w4 |7 |* o: y- SJust like the first Step
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4 vs 5 & ]4 n8 A9 ~& y5 i0 ~

; t3 O# U/ `6 F/ z/ ^5 b# ?4 `; ]if 4=5 6 is the fake one
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if 4>5  4 is the fake one " a7 g2 y$ c6 ]& i6 N% p0 c

# t- N/ U0 J& ?! \$ Cand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
1 e5 z1 i/ U6 `1 h" p' G% J$ MGroup B: 5,6,7,89 E4 Y. ^' J2 N& U, u- M: U
Group C: 9,10,11,12. z8 L, S6 ]* V* @
Group D: 136 w4 O  g/ S" I! N6 _" [* U, K/ V4 l

4 }- F, k# ]( n& q' X+ ]Round 1# p' `: I$ M/ T* @: f+ j* W, B& P. @
Group A vs Group B; o7 ?2 G; z  |0 |
如A and B一樣, 即較輕一粒在Group C or D
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) ]4 W% ~7 S0 Y) Q) w/ ?- wRound 2
( _6 I+ u* F3 y) a- g9 Q再在Group C拆成:: j& c2 f7 Z/ p; u: m
Group Ca: 9,10+ |8 J9 B; d( {! Z; l8 F
Group Cb: 11,12
. U' i- E1 o. F" |. y6 v$ O, p然後再秤, 如一樣, 即13為較輕一粒.
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! |. n! V9 F' u' m- i( H如不同, 即較輕一組有一粒較輕波子在其中,
; l9 r* u) w, v+ P% @3 r& l要再秤, Round 3, 之後便知答案.
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' z. k9 w1 i6 o* me.g. #1 假設10為較輕的一粒- t- t+ H9 l* t: ^+ W
Round 1
; P8 f9 c7 g. S1 {0 i9 N. x1,2,3,4 vs 5,6,7,8 = equal
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Round 2
6 E* p1 K+ z; K( L8 B9,10 vs 11,12 = 9,10 < 11,129 a4 O0 {0 s; J8 B' {

/ e+ G$ U9 |0 j6 oRound 3
# w: z6 A7 C/ a- A9 vs 10 = 9 > 10
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The answer is 10.
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9 ~* ]9 r- W2 _1 fe.g. #2 假設7為較輕的一粒
: A/ K$ o9 ?8 b" M8 q/ e$ WRound 1
9 s0 M' Y% z' H# a! y+ }, V: I1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8# |! j( A. s7 C2 ~

2 L5 O+ j( j) a. g* FRound 27 `& j( Y- x' }4 d7 H. `
5,6 vs 7,8 = 5,6 > 7,8- E; Q! i% P. [6 b1 O

( t% }0 |6 i& I  `9 URound 32 B8 {9 T$ G9 R2 v' Z  q# w" [# n
7 vs 8 = 7 < 8  M( g, U( `) W$ ~8 i

' m& \: Z6 G7 q6 kThe answer is 7.
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4 T/ U+ e! W5 [2 N' @. ~e.g. #3 假設13為較輕的一粒( c3 [$ E8 W6 K8 y. W
Round 1
: k$ O$ u0 ^) B" S3 B5 M1,2,3,4 vs 5,6,7,8 = equal5 Y, G6 {1 q: ]' d4 [

; i8 p5 o$ {0 }7 F! hRound 2
' X9 r) c. v4 D- ]2 i9,10 vs 11,12 = equal5 B9 S- s. N: o; N

# `7 ?; W9 L( T. U" J! [5 bNo Round 3
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% U, Z/ }; Q) L% c& uThe answer is 13.
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. \. W4 j% E$ ~  ^" \2 w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:
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1-6 vs 7-12
. F4 z" \7 A# O4 v. W) H1 z- \" zif 1-6 = 7-12     13 is fake& ^% A1 B4 _; d0 ^; ~& I' A

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Weight the 2 time ; B5 U4 g2 A+ N% T' K- n' B3 P
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Suppose 1-6> 7-12- @' }# {' k" _+ V

. V2 v- ^. B' C+ ^' M1-3 vs 4-6
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" [- b! P. M: d$ \' D# C6 q( r- w1 aThen Weight the Third
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Suppose 4-6 > 1-3) G4 Q: F3 z3 f& e) U
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Just like the first Step) k) ~- L2 N# T8 ^$ v

# |* E; O+ j- K/ z* T0 z6 P4 vs 5
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- |8 O- C1 l  N* X6 j/ j" Qif 4=5 6 is the fake one $ h& X9 K  K7 `! Z& N

1 g5 l8 Z* g4 k5 w# ?9 S% dif 4>5  4 is the fake one : m1 P* T. f) Y$ O( l3 n
and so on......................

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9 a' v, v# b5 D% ^; f/ {. |問題第二步7 B8 A4 M2 R. z: D2 K/ g5 Z
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Weight 1:  1-6> 7-12% S4 E$ x& S8 k  y7 `/ X

' [) N! v7 ^) \Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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9 K8 ]' B4 l3 L# G+ G7 O% _你第三步点去搵 7-12 边一粒???, |9 w; J2 f. b- ~9 f$ u1 d7 K
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========================================
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$ w) ^( t% Z/ o0 o問題第三步
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Weight 1:  1-6> 7-123 n; |* C  E3 p& j
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Weight 2:  4-6 > 1-3 % N$ @+ _' [9 C
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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