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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- u3 p% x- I  u, y1 u. ?1 g『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 F5 O; z! @, f% I5 d9 m5 R2 |
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？』5 X5 F( z  M, P) h) K

! E9 R. f& c3 f2 e  r* ]6 Q注意: + ]/ i# _$ V1 Q5 A' v/ l  ~8 f: [# X

' }) j, R* x6 j* |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0 j# q' F5 `6 X# D: P  X
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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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3 F0 K$ l! j: ]' o6 o[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:4 q# h/ H. A4 }* Y2 N0 x
相信e條題目都有吾少人玩...

9 v2 J/ O( D4 [+ s我以前畫左個chart去答,
/ X8 ]( P2 m  k3 i等我搵下仲在吾在$ c: L% L8 A7 ^3 r/ C; w
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當日用左37分鐘答１２粒波子，差７分鐘才合格。. x  H) ^1 K2 |! W
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,% O+ W) U$ g- X- y0 c
等我搵下...

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: _  g! O) |- ^7 q# U/ O1 l1 i$ ^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:( S5 k2 Y( i/ z: m( u+ I
唔識隱藏...已經諗到..

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7 e+ z: u- c6 x3 N' U% [; J& w) gsor !!!....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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/ R9 z5 R) [6 J( O. T1 k2 U) ^[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:5 J: J) L1 H/ H6 J9 E1 V& v6 P8 b( [
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:3 V6 t  W0 |" M- f9 g

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, i( o0 r. i/ p# APlayPlay, Let me know later who has the right answer and I will add points accordingly.
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; p& \$ O6 ?1 D# s$ [Thanks

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: G' o" y5 S. F9 Q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
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' U6 H( S( o( V: G( |8 a* r! kWeight the 2 time
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  G( {' S- i1 t- iSuppose 1-6> 7-12
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1-3 vs 4-6
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! O4 s% V9 K# B) b/ Y) yThen Weight the Third3 n5 N# K' f( n) L9 i8 m
3.
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+ S" q) T  Q0 y6 ~; J4 YSuppose 4-6 > 1-3
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) J3 S4 ^5 [  y' |- v6 FJust like the first Step) Q- }0 j; }7 Y# L& f
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4 vs 5
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- k' {+ f6 ]  V/ F4 N6 y- h% rif 4=5 6 is the fake one ; ~( Y$ S$ w; v" h

1 S" r$ a% u5 \- W3 F- p' S0 E8 vif 4>5  4 is the fake one 2 L* f3 s! O' z

* ^. a; ^  Q& a, U4 i* Xand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4; Q$ n8 s% o) Z+ e9 n
Group B: 5,6,7,8
% a, y; O, a% A& nGroup C: 9,10,11,128 t4 u0 b9 B. Q, x$ x. r
Group D: 13
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Round 1
  c3 d4 @; d+ H% {! \4 kGroup A vs Group B& R. s5 g/ ?! [4 i' n6 a
如A and B一樣, 即較輕一粒在Group C or D
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Round 2+ J- z# E, {6 f& \' ^7 ]- @2 s
再在Group C拆成:- B; K7 n4 P9 Q" [! }/ D
Group Ca: 9,106 q9 {4 ~0 }  L( n
Group Cb: 11,120 R4 e/ n; Y& @+ z0 G* h
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,
$ t. a  F3 i6 [# s7 |% S要再秤, Round 3, 之後便知答案.0 l6 k4 w/ O9 `* M1 _6 G3 O. Q
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e.g. #1 假設10為較輕的一粒+ ]2 I! b  P) `2 U- F
Round 1" X/ J) F) y( T4 C( ^, I8 u; p
1,2,3,4 vs 5,6,7,8 = equal
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& _7 _" m6 G" T8 N# k- URound 2- T$ x/ i" u/ K5 E- _) S; c' Y
9,10 vs 11,12 = 9,10 < 11,12
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9 n  u) G( Q( {, M& BRound 34 J: U7 F4 I" h+ O6 n0 _
9 vs 10 = 9 > 10
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The answer is 10.* X5 I9 u* o1 u6 W6 S
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e.g. #2 假設7為較輕的一粒
; y4 {, [2 b3 t. H1 [  t" a- ]Round 17 r) n/ r! ~& H9 i, B! R. |5 H
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8, ?$ Q8 @$ J- m0 u

* J1 K! Y: s, gRound 2
+ J2 Z4 i) w6 B2 f5,6 vs 7,8 = 5,6 > 7,8' f. \6 a* f* T6 {, M
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Round 3# H% ~9 \" B( i! y
7 vs 8 = 7 < 8, }3 L, Y( h% z' ?0 v! r. r

6 G2 p; T" I, ^: t5 C: Z1 P  kThe answer is 7.( W  Z9 `  f4 _, H6 U3 m, D& e
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e.g. #3 假設13為較輕的一粒6 z: V1 s, z/ i( i# x; G/ D
Round 1% s5 J+ q0 ?4 p6 Z. t0 F+ d
1,2,3,4 vs 5,6,7,8 = equal3 R8 ]4 \2 x  e, y
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Round 2, q. \: [- t0 w5 I; e7 H
9,10 vs 11,12 = equal# R' n6 K3 b- G/ z+ |

& |* V! A7 @4 y4 }No Round 3) m+ @' ?( u# R3 e$ ], n( l

/ ?: K$ u% C7 O# G1 {0 B4 OThe answer is 13.* L" B2 x- V( s, }9 g" P

  \3 V5 C1 _" [5 U% ^0 Q: r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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/ B- |8 T4 h; y( q' q% H7 m1-6 vs 7-12
' {4 }! k2 x# Y: a9 Aif 1-6 = 7-12     13 is fake
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Weight the 2 time 0 H! E! K* e  C$ J  o- h& A

" A: I) b# W! L! D1 o5 C: wSuppose 1-6> 7-12
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1-3 vs 4-6
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& L+ _# ?  y) G1 T' N& ?8 ]Then Weight the Third1 B: ~3 n. P! b; N# V/ Y' O( a; R
3., ?3 T% o0 p0 l- ~8 G

1 p0 S8 k0 C7 l- C) i- P3 dSuppose 4-6 > 1-3* u, y: Q# }7 X
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Just like the first Step7 V2 w& x- B2 L

3 O) S4 R- e2 q; ~, U4 vs 5 5 L5 H/ M  ~4 K- [: u0 x
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if 4=5 6 is the fake one & r' I2 R8 G# Q
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if 4>5  4 is the fake one
, z4 Q# M3 `! yand so on......................

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+ j& X2 X" P- K問題第二步& U3 }/ r0 z  J% C& \

4 V, J4 C/ Y' P3 Y, q: v- WWeight 1:  1-6> 7-12
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3 }  n! H4 V' o; `Weight 2:  1-3 vs 4-6 , if 1-3 = 4-66 v  l  v* M. \! m2 P( i" c6 {" s) s

: D! \' r5 }, G你第三步点去搵 7-12 边一粒???4 A4 x/ [( y2 F% Q1 d

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問題第三步
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* s" n, n+ A( }% `Weight 1:  1-6> 7-12, X' @) R; \- @
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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