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' H+ B' X. m  m% I) f6 l

9 k6 s: D+ E, C8 t3 W『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)。
8 ?9 ^6 [/ N3 A/ \: [' r+ U3 Z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？』- p, w( S+ U  s! c" r

. x& f  `0 o, y, M: ?1 e8 F& q注意:
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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+ ~! w. ]( U) ^8 C4 m0 \

' v5 x8 h2 B! o7 Y) B0 j* }& G2. 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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, Z: g8 l9 B7 Z6 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:
$ z" b. m4 M2 n' q6 T9 S  W6 ?$ T) _相信e條題目都有吾少人玩...

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我以前畫左個chart去答,
9 _( ~& C. B& H! r6 [; A8 k; T等我搵下仲在吾在9 c' C9 S" f% \; `* z# E- E) w0 R

6 a) b2 K2 V# S; B; ~$ x3 c- q當日用左37分鐘答１２粒波子，差７分鐘才合格。
) E! b% w, e' {8 u6 M13.........
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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,* f; i" T' T% {  K( K- G0 _* T
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:$ S: h7 h( q) D+ T
唔識隱藏...已經諗到..

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7 y5 ^% }! ^& V$ M4 \1 T
sor !!!....e加改左
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4 U8 i! H. N' c( \& }' ?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) M) y3 \; t% g; e6 H
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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
: L0 N0 X9 d2 K2 A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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- r: b4 Z: E7 P! a6 WPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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# @* p# Y: W& h* iThanks

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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
% d5 B7 F. e% S6 P: c" K1-6 vs 7-12
6 S6 }9 [6 J$ \+ k( p' A! ^9 Cif 1-6 = 7-12     13 is fake
1 ~% z+ u9 z/ i5 m# J; z
) v* s4 w! N1 V: n4 Oif not
# C! N9 R5 n" d4 {( w7 _4 n. l& ^3 G7 P0 u! C) u- u# v
Weight the 2 time
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Suppose 1-6> 7-123 V2 M, y' `5 `2 P
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1-3 vs 4-6
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# w7 Q% T* @  |% ~Then Weight the Third
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( u- W' X6 E) b. L1 a
Suppose 4-6 > 1-3
) d: J* `  v6 k0 U) x: h6 t6 k  ?# Q) P5 }( ?+ D2 _: h: O# k
Just like the first Step1 t2 Q0 m* f+ M+ ~. @5 C

1 ?( X5 X8 l5 A3 {7 Z0 ?4 vs 5
1 t/ w' R* z) ?/ k* w$ D( h, C$ H6 e, m% q$ u+ Z$ [6 a3 o
if 4=5 6 is the fake one ' M+ G: c8 v, |5 k# U
2 u4 {& R9 `6 S, S5 @/ j  B
if 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤  C) K& m( T' g, f
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Group A: 1,2,3,4
; F5 _# Q( U1 O# _4 kGroup B: 5,6,7,8
! C0 F  |& p% G0 r5 }% yGroup C: 9,10,11,12. Y# p7 P. |# J8 A- O
Group D: 13
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8 f& ^& V7 {3 A/ R4 S+ ^Round 1
4 ]' m* l+ V% Q* tGroup A vs Group B
0 Y5 c% B5 L; E- T: ]# F$ c9 {2 q如A and B一樣, 即較輕一粒在Group C or D4 |8 c! Z+ k; F" E1 O( c0 F9 d

7 B( e3 W: z# [; U9 w* jRound 2
: D2 Y, P  ~1 L8 M: j! v* Z6 O* i再在Group C拆成:
( G. i  u: ~/ `/ M0 EGroup Ca: 9,100 F2 P3 o( i/ ~) Y1 T9 Q1 I
Group Cb: 11,12
: V1 F% c" o$ t5 I& y然後再秤, 如一樣, 即13為較輕一粒.0 F2 b6 I& U- Z/ H5 S8 }
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如不同, 即較輕一組有一粒較輕波子在其中,
# U& V( L3 `- P1 p7 ~: e( o要再秤, Round 3, 之後便知答案.2 A; i7 q. q( v7 J2 T, x) ?

! J7 d7 q# F0 J% |e.g. #1 假設10為較輕的一粒+ a9 w) _  G* S# P& @) M8 K
Round 1
! U0 ?5 a6 W1 @- x0 X1,2,3,4 vs 5,6,7,8 = equal
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Round 23 p8 F* F' @- P$ s9 E( }
9,10 vs 11,12 = 9,10 < 11,125 S2 |/ R3 o4 R! M: \
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Round 33 D# h" u- N) ~& e, a3 y7 Q, c/ n
9 vs 10 = 9 > 10
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* L4 T9 f/ l1 V) p- H( `; }; pThe answer is 10.
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3 h: t' T2 H6 y$ b: ]5 f" de.g. #2 假設7為較輕的一粒) N# k" D- w" m- n& S. A) b
Round 1
, @# K2 k: I* G5 x1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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) M% y$ x( w5 K* X, k( D# LRound 2+ Z  l" D# l" ]2 `0 a; s6 k+ g7 Q
5,6 vs 7,8 = 5,6 > 7,8
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8 j( h) T, W" x3 v7 z+ P$ VRound 3, c. D0 @6 E' [
7 vs 8 = 7 < 8: h, s. C  C$ K) V$ V/ X

( p  H( f! W  a1 B9 s; t" uThe answer is 7.3 p- |" @7 Y5 o; L4 J
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e.g. #3 假設13為較輕的一粒. a2 i+ z7 [5 j5 n- b
Round 1
0 \: Z4 W- U+ z) d8 o. K% \1,2,3,4 vs 5,6,7,8 = equal9 {' q9 P. s4 X9 A; }. Y

* N" f& ?$ n6 F- H' p0 k: ]/ LRound 2
$ W0 D' {8 M  I, p- M9,10 vs 11,12 = equal
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No Round 3+ `, C* G! \1 U  H8 g, C

( a6 V  s5 g- c; E; O4 ]The answer is 13.. m" y% e) Y2 }

3 v9 O( L7 {" Q9 W" h3 u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:
# {& |5 g6 \3 x( ]7 Z+ Q2 `4 J1.
! y  z, U. D* H/ C' {* `( m0 {1-6 vs 7-121 y+ Q, ~' \8 v
if 1-6 = 7-12     13 is fake
) A5 d- j7 c+ V
, i+ O. b# i# K' S8 nif not
7 u% v$ p" v; H& U& x% E
! e/ ?$ i! ^% _- [+ a* |Weight the 2 time
& |4 Y( z7 {4 `* ^* K2 b: P4 ~; F! D' q' D  {. I/ h
Suppose 1-6> 7-12
8 u( h8 t1 b$ @$ m2 ?! A" d4 n. j4 e  W+ m
1-3 vs 4-6
4 q" @/ J" {  ]# f/ [: y5 `
- W* c6 r- |9 ]Then Weight the Third" k% A% s* y' P" j/ k6 w, C
3.* `" r* M+ n( P0 R( M

, l" T5 C# e- P  h  PSuppose 4-6 > 1-3
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Just like the first Step
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4 vs 5
3 [  B# N5 b% r9 }2 j# n, m7 ?& p* ?' J% o
if 4=5 6 is the fake one
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/ Q1 V) }- P* Wif 4>5  4 is the fake one
/ v3 w6 {; F3 ~! n! Gand so on......................

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+ Y* V1 O$ Y- p! s+ x; F問題第二步3 D' p, Q! m' S: i
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Weight 1:  1-6> 7-12
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5 R' ]3 N+ ^) W' t* KWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???! w  p( C3 i# e0 S$ S6 {

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問題第三步
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" e3 f8 z2 W/ L; SWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 # I6 \2 K" U- z0 I' y) M

5 R1 S, i' F  ?0 O! a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