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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3 P# F3 z( P5 p: T『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)。  l3 v2 h" J' t. P! |* U3 B" q
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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9 O! z, M" n) F+ }( p. j1. 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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5 o+ C. L+ U. u( S5 H5 m; w2 L4 I[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:% D3 y! ~+ U, Z7 {7 G
相信e條題目都有吾少人玩...

0 C6 t8 C% q" R7 v8 X3 Y我以前畫左個chart去答,( v. c9 n0 d) H
等我搵下仲在吾在
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# R; c+ o8 y& Q2 x& }當日用左37分鐘答１２粒波子，差７分鐘才合格。
2 B% ?% W. ^& {1 e+ \- r! I13.........; O: [0 P! ^+ R" o2 j
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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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" D! J. A3 b4 m4 r我以前畫左個chart去答,
% d3 H/ h1 z8 R% N$ G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:
& k) N$ p* E9 d3 R9 K唔識隱藏...已經諗到..

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# Q6 q( |$ a) Q1 \4 a* K4 ksor !!!....e加改左7 Y7 I9 v! I* o* g, k+ {

6 w1 W; V- b" z% H( ?$ n2. 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( @" e# A# o5 ?, w- |7 r- ]/ |' S

7 K/ H* |' A/ w8 l[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
- I; s0 C) S( p4 ~) {. h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.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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7 i0 B# @: C: m# Z3 iPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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" F* m1 ^4 d- m8 Q& i) jThanks

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* X) \( B( }, D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 7-127 y" }; Q4 F% @" C( m, G" e! h
if 1-6 = 7-12     13 is fake
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if not 3 D/ ?" d. u0 ?7 u9 Q# _

, _) Q, E1 a8 ~6 {) nWeight the 2 time
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# B  U7 G4 q9 d. L4 n& SSuppose 1-6> 7-12, C8 Z9 {) K4 U; i0 V
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1-3 vs 4-6
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9 `4 w3 R  `( s+ T3 ]/ ZThen Weight the Third
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/ O' h+ ?! s1 e1 ]- H9 I- P' MSuppose 4-6 > 1-3
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Just like the first Step% |) ~" v$ b2 v( X7 x

" X( J2 K9 ~8 J- W8 @( N% Q$ K* d4 vs 5 ) A/ Z0 _3 ~$ L7 r

7 n9 z) N) y: o/ z8 g% f1 P: Fif 4=5 6 is the fake one
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if 4>5  4 is the fake one
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; `: w! b2 u' Q( g; ~& X% Gand so on......................

hello1997

分3組4隻波子秤0 V7 {; A4 }" ~- F4 U

8 j; T, j* F( O: L% HGroup A: 1,2,3,4
0 ^9 a" b1 ?- p5 l! HGroup B: 5,6,7,8* G1 V+ F/ s) O/ a# R, o
Group C: 9,10,11,12
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7 m, |+ n/ Q6 ]4 I/ @Round 1: k* n; |3 \. C6 e
Group A vs Group B
! F8 U. n2 r( l. O' F如A and B一樣, 即較輕一粒在Group C or D, K% T% c4 ^. K* K6 q

. A- F  r' g0 i8 b6 nRound 21 N2 Q$ R% n+ P$ i% X
再在Group C拆成:: e+ K* v  o+ }9 @4 h0 w
Group Ca: 9,10
. g3 C- B! e2 U4 N  i) V: Z, aGroup Cb: 11,12+ T4 D4 f( T. V: P+ _, d
然後再秤, 如一樣, 即13為較輕一粒.+ E3 w5 G0 n! z$ c2 }! u! @
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如不同, 即較輕一組有一粒較輕波子在其中, ( J6 H& g& \* R" `( R
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
- [& }% o, V' ?% HRound 1
( S7 y, [) h4 R7 r" V1,2,3,4 vs 5,6,7,8 = equal
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9 i& ]; N3 q" T  [0 LRound 2
- v, l  ]& [5 L( S1 j& R1 [9,10 vs 11,12 = 9,10 < 11,12, }5 _- m' L& ]/ g1 O( y0 J

# M$ }7 M. F& t+ S5 M1 `* i+ Q: Z2 PRound 3
: F6 _$ F: N  Y! s: d9 vs 10 = 9 > 104 w' o  b* k4 |+ X
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The answer is 10.* s6 M1 L0 v7 U% X( Z" E6 Q

- E$ X# D) M7 H: t1 J' L1 f: h/ Oe.g. #2 假設7為較輕的一粒4 f$ H% M9 E9 Y  E
Round 1
" z$ f% m) ?0 f( j* b) y" ~1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
9 @3 U/ N& {& m$ B5,6 vs 7,8 = 5,6 > 7,8
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Round 3
& h9 ?# V7 M1 w' |5 ~6 z6 v! K/ r7 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
. a$ n( l# l3 D3 C$ yRound 12 O% ]. C# `+ w" A5 m5 x. X. C3 n
1,2,3,4 vs 5,6,7,8 = equal
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! b- y. ?  \3 w1 @Round 2# \2 |0 f  r, O) m) a7 i3 T+ J
9,10 vs 11,12 = equal
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No Round 3
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The answer is 13.) |% G/ X6 }1 v! Y. y7 u

6 i/ Q! f4 W% w' G0 }. ?唔知我答得正唔正確呢?! % L5 n) X" {( t8 I4 `$ ^

: Q& y3 t: ^: f( V0 e[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:' B* C- y! E- m
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1-6 vs 7-12
/ C% A: v3 a8 w3 G% Wif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third
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1 F0 v) `0 a: p/ u" |  y  I9 YSuppose 4-6 > 1-3
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Just like the first Step1 ^* \7 R- c8 B8 V8 k
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4 vs 5 8 p* ]- L( u: X8 R2 s) p

6 `/ m7 ~1 W) c4 `! fif 4=5 6 is the fake one 6 `) `1 X# r$ S/ _4 Z

) S# x. c! X* G1 A! d- _if 4>5  4 is the fake one 6 f4 A% `8 y$ |# @0 v+ E  c
and so on......................

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$ B) ]- f) H, m, x9 J$ a問題第二步  t" O$ b+ n9 X

3 N$ |0 L/ c( N3 Z3 H) Z  B( ~" FWeight 1:  1-6> 7-12( R  e" \% q- v& _6 ^4 O  ~4 k

% a  {) X3 s' O7 b0 g8 {% @0 A3 {Weight 2:  1-3 vs 4-6 , if 1-3 = 4-61 i/ |: ^' g! e, l" n' }
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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: p/ s- ^( [9 H, M! `% W
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Weight 1:  1-6> 7-12
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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