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8 H. ?# O* l1 M$ c7 g
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『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)。! e9 I# H- @+ V  T) v8 T$ g
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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9 ?+ B) X; z8 C  X3 Q注意: $ h5 i! H+ x  p2 j- @- o
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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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& v3 h) E- Y& B7 ~- `. C6 G$ n6 V2. 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$ V, f* c! I4 O4 w. v* |

) i+ `0 Z$ ~. N[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
: p& J5 ^! q7 m, f  t7 L相信e條題目都有吾少人玩...

  d4 o; o8 H6 I我以前畫左個chart去答,
7 Y$ n8 L# z2 m; @! x% s+ k8 E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。2 A( i1 _2 ^, l' d: K4 v$ j
13.........
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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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我以前畫左個chart去答,
+ w- |- |2 A4 I# J  u等我搵下...

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% I+ c1 p* B9 G/ X/ v9 m& w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:/ ^# i" _. T0 q! D
唔識隱藏...已經諗到..

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  y8 `: K: k& O. H$ z+ b7 ~  U1 |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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6 F( h& G7 g6 b( E- _8 D[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
$ ~( b# J  o4 P  i' p* J7 k& D/ x相信e條題目都有吾少人玩...

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4 e1 j2 \: t. z, SPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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1 g% j$ x- k& }/ S+ f' _' }9 nThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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+ i* H3 }& n8 b1 P" z7 h, ZPlayPlay, Let me know later who has the right answer and I will add points accordingly.6 V% K; }$ W8 B

. H& @8 T( s6 T- T: a# ?9 `Thanks

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  b  ?/ U% `) P* z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
: X3 E; K; i7 t( N  H, C. dif 1-6 = 7-12     13 is fake
+ `9 H6 J! }5 a& }6 W% [$ \- ?
, n% n: v( ]) m& h% Y7 [if not
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/ K7 V5 n- g' yWeight the 2 time * h! h7 u* l/ ?: G% }* }4 J. K

# ~% `( l' {. A; \! L6 k: mSuppose 1-6> 7-12- I% \6 g9 c7 h0 n1 X) M

+ r) @2 m2 D& P1-3 vs 4-6 ' g5 r# q0 x2 Q' ]2 }

  z# G" D. f6 R: VThen Weight the Third/ J8 z# `& z& z2 S7 ?6 G4 U
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Suppose 4-6 > 1-3
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; W; B% N! ~' W. X; P' S0 K% J& uJust like the first Step2 L! Y% p1 j0 Q: L
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4 vs 5 3 I  g* _5 f" g0 o
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if 4=5 6 is the fake one
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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% D* e6 w+ A- a" Z
Group B: 5,6,7,8& H- ~$ y6 ~# t5 ?  R2 E" n! u
Group C: 9,10,11,12# k+ ^, k) r$ U1 k
Group D: 131 E( i# h5 h8 b! i0 j

9 ]& V$ x2 ?, H# r/ G. l* I& W5 MRound 1
" i2 L2 Y( e- W. m: zGroup A vs Group B. G/ J, u5 D& j. r: ?5 M: K
如A and B一樣, 即較輕一粒在Group C or D
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Round 2
6 @* E5 r! T6 t5 ?再在Group C拆成:4 P, \; |& p; P
Group Ca: 9,10
# [7 W5 a7 Y! A2 G5 J  q0 `4 pGroup Cb: 11,12
7 ]1 k% a; H& ~" d1 l! c然後再秤, 如一樣, 即13為較輕一粒.% u- j' g2 M7 y# R: Z! ^+ }7 ?. o

) [  X& P4 ?6 q9 B% @如不同, 即較輕一組有一粒較輕波子在其中, ' O* ^6 m( s- f6 f& w, f8 X5 h1 i
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
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1,2,3,4 vs 5,6,7,8 = equal) h; V) H4 E, ]! e
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Round 2
4 |, c$ ?+ t& x1 C5 O) @  p9,10 vs 11,12 = 9,10 < 11,12% }( _' M/ z$ m4 h( W1 ]' E8 ^
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Round 3
, }5 _8 J0 A) H# q9 vs 10 = 9 > 10
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: N! s2 v: p+ k5 C7 U0 h' ~5 v( uThe answer is 10.
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- e0 O. J- o- `7 se.g. #2 假設7為較輕的一粒5 H5 B& a! m: N+ O; w
Round 1* [, \* M  `6 o# A* ~
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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" l8 N) g/ K* I7 L& `7 P, A2 mRound 2
7 V0 `7 x  O" {4 B* W6 e5,6 vs 7,8 = 5,6 > 7,8  j% L, O8 N6 S# p% C

$ O  G8 w! B3 _1 j/ w4 x9 {Round 3
1 Q# m' C7 t  K# k9 ]( X* c7 vs 8 = 7 < 87 S" J9 A8 ?' k
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The answer is 7.4 B# y- `, u4 J3 p, g1 u

" X8 m" G0 H- D' _e.g. #3 假設13為較輕的一粒
8 h3 g' W; P# C: Y, f1 fRound 1
8 w0 e  X) M0 F' p6 R4 o! c1,2,3,4 vs 5,6,7,8 = equal
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' H" j7 C% z; |" a5 F+ Z. xRound 2' |+ X2 U+ |8 M' X' Z, G7 d
9,10 vs 11,12 = equal3 r( I7 D! e) M& x1 O
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No Round 3
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( I- {1 X; e: {* ?7 h  _8 UThe answer is 13.: B9 U; ?) _( T
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唔知我答得正唔正確呢?! 9 N- O( R/ l5 Q2 }9 i9 x

% A6 g# f' o8 `6 i8 J[ 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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& O3 Y+ S3 g# w9 }( s" a1-6 vs 7-12
% ?; N7 K" e( X0 |$ c7 |if 1-6 = 7-12     13 is fake
+ V- ^0 Q( H% q+ C# j9 G5 s( B& G- q
if not ' N; w. G# b7 I# w* A! H( a/ t: ^
0 K) i6 r/ a* v2 Q0 S/ ~/ M; u
Weight the 2 time   N& [; o# ?, ~5 e: ?1 t
6 |9 w" `1 n% ?$ a4 f+ Q
Suppose 1-6> 7-12
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, p: x3 d2 G9 m8 I1-3 vs 4-6
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Then Weight the Third
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/ h# E: T, r$ b# O! BSuppose 4-6 > 1-3( E# m8 w4 F. _/ S2 Q5 U; [8 P

8 j0 w7 Q2 i. g; j2 M9 F8 `% rJust like the first Step" R* {9 P4 F1 P9 i/ e
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4 vs 5 ) D3 W$ R- H0 n% N
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if 4=5 6 is the fake one ( t* I  ]& B* w

. ?9 Q5 N8 M4 [+ @$ iif 4>5  4 is the fake one 5 f# y! r" @" i, f* [# E* D( f
and so on......................

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, e# }7 Y+ z! g6 h6 h' s5 O( d問題第二步
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Weight 1:  1-6> 7-12+ L* _6 B, ?2 E5 K2 F5 {# @
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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6 O+ ~. {% F. t3 B0 e& q4 x你第三步点去搵 7-12 边一粒???' o8 k) s6 {5 G! \# q5 J
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問題第三步. B) v* G+ x# _% B, C1 R3 ^2 V

4 h8 g5 p+ H3 M+ s# L1 B/ |! eWeight 1:  1-6> 7-12/ D( V' z2 v5 b; e8 Z! Q
! j; C- `: U0 S, D2 C
Weight 2:  4-6 > 1-3 " @* M$ i0 k  a2 ^) Q- x% ~

2 \! _& ]! I' B5 @' e& F* k. w6 ^. W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