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 r; z( @3 b; l; R
. f5 n" v$ W& l, x『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)。" W  @' M" u, u4 C4 ~2 S! _
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？』: C4 Y7 ?( g, H" ]  k

* r, d( J' v+ s8 k注意: # p* _" h: ~2 F2 _. D* T3 H6 _
, Q* S2 f& s( W
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
5 e+ y5 U9 u: F) h& w, n8 t" S( ?% p0 {0 k
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
: q$ ~% Q6 N" x+ J& b1 T3 u$ h# y' Q! P  G* w
[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
  e# ~' I8 B3 l- {相信e條題目都有吾少人玩...

" U( O: ?  f  L9 R
我以前畫左個chart去答,
. f6 P1 Q( c9 \& B1 S等我搵下仲在吾在
5 Y, |7 L6 v* v6 O
8 i0 e( U* H! k當日用左37分鐘答１２粒波子，差７分鐘才合格。
4 Z( D! W# t" {6 U6 h! X13.........& `4 F# ~2 i! _* F

- K1 ~' }  V+ G- |[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:
  }+ r* E* F! I$ w# H
1 r! y# }; h  T: l: v我以前畫左個chart去答,
0 U4 ^9 X. @+ I  N等我搵下...

& M) l+ L  i, T! a3 ~" {) J+ f3 v& c9 @* 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:
% M' A/ S- p) X7 f唔識隱藏...已經諗到..

' Y0 k# X# w; ?3 a6 a) [" z
+ q; m; l) e  o/ Z/ s8 G! X4 Fsor !!!....e加改左3 \1 [5 i" C% E) c
+ _; W! Y( {% B, {4 ~7 J7 v
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# e. R  f, J  C' L$ n
/ r/ e  Y! ~8 C
[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:6 T/ D1 p4 O6 L5 P  N5 m3 `
相信e條題目都有吾少人玩...

* L1 \& o+ c6 ?  X' u! w: P

8 {  ]4 X4 r; M! X: h% r0 |( BPlayPlay, Let me know later who has the right answer and I will add points accordingly.
$ @3 r$ d5 w' l* q  P9 u5 v/ j0 W6 i3 ]0 L0 g# O' d
Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:; `: @, J/ Z* n+ m9 }
* o  `9 w4 o* |1 `5 {
, D9 {" I- W& o. p5 C( P
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
0 q" E% p6 [0 t" l. n) r0 L9 c& ^2 u& h( ]
Thanks

% y1 o9 D/ C# {) g/ z/ K& L
; g8 t5 O+ C( `; N7 k; s8 M
不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.1 ]4 S- a3 Y  n8 N8 h2 p7 X
1-6 vs 7-12! [* \4 e6 l9 y) }- M  d
if 1-6 = 7-12     13 is fake; i) e" I3 m* U+ U, E5 S8 p! {

# S$ X' o: X" t# Uif not
+ p) z& u* w8 V, X7 o
$ J* @3 u, Q3 B* O  ~7 @) qWeight the 2 time
  X7 f0 S. l5 R! o' P4 N2 Q 1 `+ b. k/ l) {
Suppose 1-6> 7-12
8 J0 P8 a# N! r
: M6 W6 |/ A( D* c1-3 vs 4-6 # @0 z% x! K1 G; e1 k4 K

+ w9 E, _# O5 {4 T3 k1 }9 |! nThen Weight the Third
# {# I4 ^0 {$ S% M$ o5 {  k& `3.
$ ^) I! B  m8 U+ W1 {
0 _$ e7 [; _# W2 {* ^) KSuppose 4-6 > 1-33 f8 e# L1 d+ w9 y% I% b$ E

8 p1 X! Z& l$ c" @! {- gJust like the first Step
. k) Q" p" C& p% z* G2 G& O
/ C' C" Q0 A0 o% n$ j$ k( U, u2 F6 M- R4 vs 5
" p; f( n) S/ i, ~, w
: w5 z+ L( F& H4 Oif 4=5 6 is the fake one
0 ?  t1 C2 O1 |$ P- T
! i) v  X% K1 }( }1 B) L8 wif 4>5  4 is the fake one 9 H! M1 E  a0 C, C! C

1 t# f3 \  I: O3 b+ gand so on......................

hello1997

分3組4隻波子秤! a2 E7 |' l- u

' ?2 ]0 b9 U4 [6 h9 z( wGroup A: 1,2,3,4
% m7 r: F3 H# ~7 @Group B: 5,6,7,8
- @$ f, M. S  _$ w9 X+ N* n5 uGroup C: 9,10,11,12  S' s% d7 ^' q- C2 D3 a
Group D: 13
. Y7 s6 Q8 m# t2 h0 M+ O! v! e" r1 ~9 {7 A8 k/ P, ?
Round 1
% i) M" E$ |% X/ WGroup A vs Group B
4 o( Y: H, x. _) \如A and B一樣, 即較輕一粒在Group C or D
0 b/ r% m( I; Z! a- ?; l4 V+ C9 X8 D& e6 \
Round 28 m* u! f2 I* Y, r: I
再在Group C拆成:/ `. C* `; f% j
Group Ca: 9,101 a3 [9 X1 _8 C0 P& x! T
Group Cb: 11,12" d  o: |9 q. m
然後再秤, 如一樣, 即13為較輕一粒.2 ?4 D, t  f0 j% h
2 B1 _" }% X( l, G2 a4 e! j
如不同, 即較輕一組有一粒較輕波子在其中, , a  |4 G! u( y7 W3 V0 f
要再秤, Round 3, 之後便知答案.
+ s" p# D/ |6 c$ a: u1 s9 [
- a$ q& r3 W( S# P6 t' F4 ?! le.g. #1 假設10為較輕的一粒
" h6 @$ k8 b3 P9 j, k* I/ JRound 1
" z4 E" y" m4 A# p7 u1,2,3,4 vs 5,6,7,8 = equal/ L5 Z3 ]7 F5 q& F# P8 _' N

. `& }$ r2 b7 y' g! Z  @. T1 XRound 2- o( L; J- U& v7 l; z) i5 k
9,10 vs 11,12 = 9,10 < 11,12
1 d$ G0 a# Z% i7 H* H, I" d  N" K* H) f: q) y, Y
Round 3/ S' o' P( U4 S  f* u; R
9 vs 10 = 9 > 107 G# Z" U6 ]/ S; R& B
& U3 |/ e8 S# S  ]* `
The answer is 10.. n& X2 Z$ C8 o& m# [5 k* B/ Z( ^
( P0 h0 a/ s+ Z( j+ E6 T
e.g. #2 假設7為較輕的一粒" w. Y( {7 s% M8 {( s! e
Round 1( R& t& {- r* ]% c) N" s
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,86 H% l! X" \9 g0 _: T* A' f
' P, z: K% w- n
Round 2$ P: m2 r2 p) N- K5 ^
5,6 vs 7,8 = 5,6 > 7,8$ q0 b! x& \9 `) Q; V

9 z* O9 v; E- C2 _( v$ J, CRound 37 E$ u2 K) q' b
7 vs 8 = 7 < 8# Y3 ~9 G/ r. G  a
$ I) @8 z8 u4 R
The answer is 7.
- [. O* m7 _* ^; g! a& A* o( |0 l- v7 a/ p9 \7 {" d: |
e.g. #3 假設13為較輕的一粒2 D" J# }7 R6 q
Round 1
; [/ b6 @. w. L. V8 l1,2,3,4 vs 5,6,7,8 = equal! |: ^& u7 l2 d' e/ x

2 e4 y/ n2 _9 d( X) {# M- M. `Round 2- J" S5 x; X7 Z8 X
9,10 vs 11,12 = equal: O7 r6 K, z* A' F

/ C7 S" A- C. g4 t; L- m: uNo Round 3
! p5 B4 D: k3 }' X6 I2 x& F; D
1 z* R. S5 i* Y; U: Y1 ]The answer is 13.( A2 C' p  L' N/ z

: P6 k1 g7 }/ a% U! M! w, W唔知我答得正唔正確呢?! & Z$ t, `0 [- a5 g  ~2 O
% }2 X) J0 @0 P# d7 Y
[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:9 C, t" x& \$ v# l2 T5 Q5 \+ ?& b
1.# G9 X; v  E5 U6 j% \$ o& @
1-6 vs 7-12
/ @1 B: x: }1 b% m7 Xif 1-6 = 7-12     13 is fake. q! j4 z  M- u1 Q7 X' C. P& K
$ v3 ]) b1 r! z, s' W1 y0 p
if not ( `) O: j: L2 q: a
# m; i, v3 R' V% |
Weight the 2 time ; o  b7 P  c, c! n6 L+ Q7 l

: _1 Z4 Y: i0 e; E" `/ z8 oSuppose 1-6> 7-12
- {4 g! ?, }: f) t( N: j* _3 Q5 D  L% j
1-3 vs 4-6
" o+ m8 {) R: N* e8 ^0 `0 Q0 Y1 a) r- u; K) }' ~
Then Weight the Third
* A3 ~% p& \/ U* L3.
7 y  z) D  _2 N; w. u
) o! V$ U! |: \1 h2 J, eSuppose 4-6 > 1-3
+ [: g- L8 m* j8 n' R3 i3 o# e
' w4 m. a6 w& c5 M7 vJust like the first Step
. i1 M% Z: @4 M0 L! d
/ B5 e8 I& D9 Q2 [3 n0 ~4 vs 5
3 I5 A( n5 u8 W" P% T% C) k) t+ J/ z8 K0 g' ]/ g/ L- w' _
if 4=5 6 is the fake one ; q) H* z) W. H

7 @, m1 Q  g, H% p( k1 Yif 4>5  4 is the fake one 4 \* x# v. F7 |4 i- d' C
and so on......................

6 B- m: t$ o7 [7 H. V' T' x! \
9 K* A. B  n8 S, h) G& f
* l# s6 P5 W1 v3 ^  r" _% Q問題第二步6 B8 M, n3 D3 {1 }
6 X1 {  N. {% p. p" i" ^% C
Weight 1:  1-6> 7-128 q' {1 }) k3 G

, R9 ]9 z; A3 i, uWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
) J* L& m* \0 B6 B7 L- T, ]
' q. c+ W+ E' Y( h你第三步点去搵 7-12 边一粒???
5 R1 n9 h) G& W9 A2 R
8 W7 c- h( _; M* m% f6 P& S========================================$ a- [& S: ~& \6 C: a2 F. A
! Y- Y( Z7 b/ }0 p
問題第三步
; |" c% N" `& u7 T8 q1 J5 q% L
- r9 H# h9 @3 V$ W( d+ q* ]) RWeight 1:  1-6> 7-12
) b; \: O4 {& M( ?8 I# g* l' r! }
8 j$ _0 i9 k, G4 ?0 Y8 t: b2 nWeight 2:  4-6 > 1-3
4 a$ h1 b, @+ o1 D' S( ?
6 ^" E' U/ U7 b' n/ [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