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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' W) K% f- q9 L: }+ l7 Q『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)。4 C7 j9 W& q* |2 L- f+ [5 F" a- n2 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？』
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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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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
( v0 F: E/ G" p; n3 u4 \+ ^相信e條題目都有吾少人玩...

; e; ~% ^5 v7 t7 ~9 c我以前畫左個chart去答,
+ c. a/ X' a1 t5 I0 j( V1 `: ?8 _( f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。
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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:
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; [# L' W0 J1 f我以前畫左個chart去答,
, A% k) B$ Z: h4 x) H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:7 V1 Y: D& d4 w. H+ U
唔識隱藏...已經諗到..

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0 S0 e4 d1 C# e4 o% zsor !!!....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:: O: `' N0 H) Y/ B5 c! }2 ~
相信e條題目都有吾少人玩...

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0 {. J6 z1 [% w. e: ^PlayPlay, Let me know later who has the right answer and I will add points accordingly.% I5 O  l1 \7 Y

& N& T4 @2 ?% a  N5 w. i  oThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:" U* o, Z2 a" k& q2 w1 y0 B" l

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! n( }. v2 f2 k2 C# ]PlayPlay, Let me know later who has the right answer and I will add points accordingly.7 ~! a# _% g2 H! Y9 t
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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

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1-6 vs 7-120 N- m  q# l5 c" d) W' G: p. [  w
if 1-6 = 7-12     13 is fake6 Z2 k$ _  F' s* h# V: M
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if not , p' a% W! }  E3 l* ^5 g. Y

' k5 k+ w8 Y8 C4 ]' d" Y: }, GWeight the 2 time 4 I& H. e- H- Q& u' v5 n- x: g" d
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Suppose 1-6> 7-12
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6 H, x- j# H4 ?1 ^5 L# I5 F4 L6 `9 v$ Y1-3 vs 4-6
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3 S& ?$ H. l" L7 b# Z8 EThen Weight the Third: D! @, J) R2 R, O0 q7 r/ j
3.
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Suppose 4-6 > 1-3
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4 W4 \1 x7 f) J! MJust like the first Step
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4 vs 5
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if 4=5 6 is the fake one ! f5 K( i" C- W( b
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if 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4: t' D- N$ c0 f* e% G( T
Group B: 5,6,7,8* f% h0 X: U) p0 z
Group C: 9,10,11,12" \9 Q' P9 W! s- s; f
Group D: 130 B& b0 f2 T. G# A  p, Z( E$ i* H
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Round 14 B6 Y' o' Q+ m# d8 y
Group A vs Group B; B8 c  O4 G$ R7 n  n# s
如A and B一樣, 即較輕一粒在Group C or D
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+ ]( K$ g; M% C( GRound 2
( Z. E8 N  j. E4 \& d再在Group C拆成:* _8 m! c! H9 n2 r" H
Group Ca: 9,10' A2 {+ \& E5 B
Group Cb: 11,12
* F3 ]. O9 S- [7 `. N然後再秤, 如一樣, 即13為較輕一粒.. x3 W) v- r+ c$ x/ G4 P! T( L
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如不同, 即較輕一組有一粒較輕波子在其中, 9 k; v9 Y2 F) @' I5 v6 R! g" S
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' s2 s. [1 t+ T% v7 G
Round 1: k, l( y$ }! Z8 g1 U4 d" w9 ?& c
1,2,3,4 vs 5,6,7,8 = equal
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Round 2- ]6 q' g  ?! P/ J0 h$ I
9,10 vs 11,12 = 9,10 < 11,12' i+ n; |: `  e) t

( c% w6 k2 ?- `7 H7 T$ R% mRound 3) N. x, [$ K5 e
9 vs 10 = 9 > 10
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, k3 o0 u7 D1 K1 Q( yThe answer is 10.
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e.g. #2 假設7為較輕的一粒
3 w9 ^# o" L7 ?" Z3 PRound 1
/ h. G' Z0 S8 B! O6 I4 `6 @  m! H1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,82 a& [( _& i- w+ j( n0 w+ E
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Round 2" ^, Q  t& l% G& m5 L3 {
5,6 vs 7,8 = 5,6 > 7,85 `5 x; c  B9 s

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7 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
& {% R) }' V0 E8 ~  I# w+ }8 ERound 13 a# ~. g2 s2 K* q0 z* N1 ~
1,2,3,4 vs 5,6,7,8 = equal* ^) h6 N2 m' o7 _) B

: Q8 I, A  w& R5 u' XRound 2# D' }( K% i+ ^0 _4 T! G" D$ k6 `
9,10 vs 11,12 = equal
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+ t1 U  a* q  b: ?No Round 32 S) p3 q) ~/ N
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The answer is 13.9 q+ c& z# `8 _
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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:
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1-6 vs 7-12. K2 d% d% s" @: f$ z7 Z
if 1-6 = 7-12     13 is fake. D9 g8 y* o$ f9 K

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Weight the 2 time ) `+ {( J0 G1 Q1 ^" r' C: E
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Suppose 1-6> 7-12
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Then Weight the Third4 [0 t% V; P% S( |. w+ j( C* E0 r
3.
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Suppose 4-6 > 1-33 S$ d! k6 H4 z$ p! X, R7 l

5 f" Z: p8 G# e# H0 HJust like the first Step: V3 p. k  y* U/ @$ g9 }

# P; S. ?; S; Y$ e4 vs 5 - I* N# Z2 H& Q& X
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if 4=5 6 is the fake one
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! T5 L/ T' v* c2 Rif 4>5  4 is the fake one
' d; t, o. y2 J+ I/ Wand so on......................

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問題第二步! w9 h/ o4 ~: r  V- Y) U
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Weight 1:  1-6> 7-123 ]8 Q0 v! d# r/ v

. ~& k1 P8 c5 _# p  R( `. [; fWeight 2:  1-3 vs 4-6 , if 1-3 = 4-63 U! Y4 J" X0 r9 y. v/ f/ ^' k

; _  z: ?) K6 y+ A你第三步点去搵 7-12 边一粒???: v% o- p# A" ^8 {

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* L; m; m$ o: e/ r0 g2 h問題第三步4 B5 L' a7 a1 _- V% I$ s

* T6 }/ ^6 g% O& o3 R8 ^1 yWeight 1:  1-6> 7-12
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8 t4 N4 _5 k( J7 ~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