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+ r! C6 N  w1 D5 L( Z* e% D

7 X! m! k. U/ r6 D' `% K- C# O『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)。
+ Q, K% ]8 V0 k3 V, r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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8 X' Q9 X# [0 R6 G3 n6 ]6 S2 t注意: 6 G: J* i# x8 ^+ U+ e
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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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1 {! x! J% S& ?( r[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:; i3 M; D; L6 P# g/ M
相信e條題目都有吾少人玩...

3 f, p: L6 W, ^& C  U我以前畫左個chart去答,
. z+ J3 {. v8 o! }  l) C  P$ i1 ]" ?等我搵下仲在吾在4 z, A: ]- _9 W7 W! P* L: D/ G
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
  h3 B) q7 a% O* L# S13.........$ R# Z3 g6 l) Z
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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:( `# W4 F8 M% n

+ c8 f$ q- J/ X3 |- o" g4 j$ a; p我以前畫左個chart去答,
7 e6 Q6 u" s3 H$ l- Y等我搵下...

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4 X  T/ J/ G' X: x1 }; Y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:
, y3 l. w7 P# p5 U; @) F唔識隱藏...已經諗到..

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sor !!!....e加改左
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0 N# \# |' \4 F5 A0 |. ~' `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' y4 M) }" A5 h7 G5 ~0 ^, T: V

2 V0 F4 N9 z4 p* x6 b+ M& e[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
+ k8 p7 T/ H/ n3 A% O9 p8 J7 r相信e條題目都有吾少人玩...

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; R& u' [) _* a# T$ ~( B- O$ X! zPlayPlay, 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:( i: {/ e4 K- L/ k. F! C

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4 m+ D2 N0 c; L3 w2 bPlayPlay, Let me know later who has the right answer and I will add points accordingly., Z; v& g4 h+ j- a7 ?: |

3 C/ u9 o( X! mThanks

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, M3 V# w! c% ^3 _2 w& V* b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
7 C& B1 ]  g2 E% x; ~if 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time 2 d* U( C( L/ M% Z
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Suppose 1-6> 7-126 q3 }' F- Q0 d. ~7 \$ z

! S+ H" e2 ?: b1-3 vs 4-6 % E1 V+ K' e6 N$ |; W6 s
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Then Weight the Third1 U+ t; H; \( w5 E; A0 N
3.
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' l8 x2 L" B1 ~+ S9 F, B4 xSuppose 4-6 > 1-3
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5 `! V! D. M, ^6 \3 }* A0 zJust like the first Step
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4 vs 5
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# G/ i$ n8 e  x9 @8 kif 4=5 6 is the fake one
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: o9 r$ ?& D: h& s! j  _" Uif 4>5  4 is the fake one
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& d2 X: G# ]( i: t4 eand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
4 [# C3 T/ q! G& o& BGroup B: 5,6,7,8
' g; z# S' X- l" w- A7 GGroup C: 9,10,11,12% u/ i, s/ Q3 z$ V! I/ m8 v
Group D: 13
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Round 1
( u- @) w( Q* {Group A vs Group B/ V  R$ t9 ~1 C: k, N0 O# H
如A and B一樣, 即較輕一粒在Group C or D* J; }9 j% t4 D$ A$ y' H

* w. v( p5 M, ZRound 2
: h2 P9 B* s3 O3 ^7 C6 o再在Group C拆成:" c0 M' q5 @% `1 h( @: q" m1 J# H- j
Group Ca: 9,10
2 N6 s& D6 x, Y+ l/ _- v( IGroup Cb: 11,12
4 N% w! e" p* V  ?/ }. x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,
0 T: g* p5 q, x8 w: d! F. ~要再秤, Round 3, 之後便知答案.
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  x+ m( @; b% s/ Y  w; ue.g. #1 假設10為較輕的一粒
; U1 {6 A2 [) H$ I, T1 cRound 1
: P9 E% r2 w' Z1,2,3,4 vs 5,6,7,8 = equal
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: {: {% q0 f: F9 xRound 2
- P: O% }( r$ \9,10 vs 11,12 = 9,10 < 11,123 S0 R; I' D; y& t( j2 J& B

7 h  q( ~$ h: F. Z% j8 n( U8 MRound 3% f6 k) ~7 ?# Q* f1 c
9 vs 10 = 9 > 10
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The answer is 10.6 r6 Q3 b- J& [

/ J1 r5 b% x$ p7 V. e, Be.g. #2 假設7為較輕的一粒0 J  C# |! q7 F1 K: X
Round 1- B* ?3 Z" _% R
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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: M* ^1 K2 v$ L1 CRound 2
' k4 K# O  n+ h/ E! t5,6 vs 7,8 = 5,6 > 7,8
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& C  J) @0 o" W1 Z2 q2 w: MRound 37 ?1 f& I0 W, m1 [/ L
7 vs 8 = 7 < 8
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- Y+ K& \) \4 }! Q) M- eThe answer is 7.
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e.g. #3 假設13為較輕的一粒
+ S( w" S# t+ H! t" n+ D  P  DRound 18 B9 Q/ g9 A0 d
1,2,3,4 vs 5,6,7,8 = equal
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5 v  ~2 V0 z# wRound 2
7 U6 @! j% j% H/ B; W9,10 vs 11,12 = equal$ [) t* G- G9 ?# r! W3 P4 u
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No Round 3
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The answer is 13.( \. d# T3 X2 S) [: ^

" F2 S$ O; R; Q, W, [唔知我答得正唔正確呢?!
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7 Q3 E* Q: H% d6 H[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:. r! B5 H2 v9 u  B
1.
3 @, Y3 U) h7 V8 T: ^/ C3 _1-6 vs 7-12
- `( t2 A- k. C! h8 H" `$ pif 1-6 = 7-12     13 is fake, k: V. _8 e1 o# x9 i7 h# v& R' n
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if not
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Weight the 2 time / M6 P" g8 |4 _& b9 d9 f5 O

# I  C/ d0 b3 F& GSuppose 1-6> 7-12
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# f, D/ x9 u/ ]* R( ?* o1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3! Z; T1 b$ o4 Z5 T: R0 O5 x
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Just like the first Step4 |0 v& T& N& y" M9 M  q

( h1 A5 h! s1 z7 n* I. Q4 vs 5
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if 4=5 6 is the fake one
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; d3 N& g+ N( _6 uif 4>5  4 is the fake one
, G1 `7 O8 D  W# B% q7 @3 Gand so on......................

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2 a- O! h6 c! M: [6 l問題第二步
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5 }; x, A, ?$ u7 I8 d9 OWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6& |. S7 m) D; J! S( h
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你第三步点去搵 7-12 边一粒???% E& v( v4 F: D' k( n6 p# l9 l% Z

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: D4 `2 r! M) `9 O& k問題第三步
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. `& o( U6 s. z6 V8 @" i% }, ^; ~Weight 1:  1-6> 7-12
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' c& @( c* U# J, PWeight 2:  4-6 > 1-3 : V3 O8 z% |8 y! h% f

! Q2 A+ t% [' w! a1 q! x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