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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1 W7 S. A9 S5 X* R* r『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)。! K7 s* t# K% G$ x" c4 V
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？』9 @& R1 X% R  Z8 E
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注意: ; B/ l% S4 a) n9 q5 z/ ]6 s1 l7 K
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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9 b$ F) C$ U- n
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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
3 ?- g% A, O1 D8 H( D$ N5 v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,
2 J3 \! I9 I* o! S, }+ J* J4 v! R等我搵下仲在吾在9 V8 |+ }: D5 F% U# t

% K$ m- `! W' w  g" m2 O當日用左37分鐘答１２粒波子，差７分鐘才合格。
0 _& I/ [8 e- r& a, I13.........
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* {5 H0 E9 q4 p; l# 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:
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8 b# i2 Y& }; N$ s我以前畫左個chart去答,
$ i& `  m: Z+ W, ]等我搵下...

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$ \0 F8 S3 i, H- t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:; }) v3 H5 Q. Z
唔識隱藏...已經諗到..

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sor !!!....e加改左, @1 t* K( W& y- S: l
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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! T% k; b+ x# H. 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:
8 Y: u' H2 z$ K% `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.1 i( G  p( q' P9 }8 {

( B% D  X9 D  B# V7 w: j# VThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:1 d0 O' ]& Y0 H& S3 f$ ~& o

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.$ I. H$ `6 ?' a: K; X2 M; P* }
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Thanks

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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.
' F* x5 b# X( J  t" W* s' R1-6 vs 7-12
. q7 Z  k2 ?. ^3 i/ ?7 @if 1-6 = 7-12     13 is fake9 {, D0 S8 P, ?! W) |4 J
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if not
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% z0 q: P# g7 jWeight the 2 time
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Suppose 1-6> 7-122 [: i* d* X7 r6 W! U

) o, r8 W& e7 Y8 ^1-3 vs 4-6
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! _& T; G" {/ f! Y; U2 X4 S7 ?Then Weight the Third: V+ a7 t+ m+ P
3.
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Suppose 4-6 > 1-3
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9 n3 w% N% _# t2 wJust like the first Step1 R  e( R4 I- |  N

: z$ }, q& [6 \; V4 vs 5 * I; s4 {" ?0 M
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if 4=5 6 is the fake one / u% x& p) I" r& l- f
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if 4>5  4 is the fake one
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7 M0 ~: y. ~2 E0 Sand so on......................

hello1997

分3組4隻波子秤
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+ N/ Q+ v4 @! x# {8 S- u5 n2 R+ KGroup A: 1,2,3,4
- ?6 R! Q9 G2 _Group B: 5,6,7,8! X% R8 j9 l: D- J% y" ?: g4 V) V
Group C: 9,10,11,12
+ D* B. L+ Z) ]9 o: j; wGroup D: 13: a3 b) P0 W. R0 B# {
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Round 1/ ?- j. q' F% |0 m9 C
Group A vs Group B% U* s7 E# c. ]; X
如A and B一樣, 即較輕一粒在Group C or D0 D2 ~. N6 c. f
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Round 2
+ }$ L* c# \, j: c再在Group C拆成:: P( E$ R. V8 Q& J! U
Group Ca: 9,10
4 K7 l; a" S. D5 c4 |6 [Group Cb: 11,12
9 q! C8 ^9 F7 v5 D2 s然後再秤, 如一樣, 即13為較輕一粒.
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- e* ~) k+ F" [, d! O) {  b如不同, 即較輕一組有一粒較輕波子在其中,
& N# {$ V8 W% l+ d# M# N3 R6 V' m6 Y要再秤, Round 3, 之後便知答案.9 V0 }/ _0 k( P* [1 \$ Z

4 o" r- Z! `$ s, G+ `% Fe.g. #1 假設10為較輕的一粒
8 m4 ~0 O3 w: O! oRound 1
' a# E( y6 z- C1 W7 X$ K1,2,3,4 vs 5,6,7,8 = equal- B9 s$ ?- j' h7 L: m
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Round 2
- x7 ?" G; x( Y/ H* J9,10 vs 11,12 = 9,10 < 11,120 W2 |8 N7 k/ K: K
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Round 3
3 ]& ~: ^: D% k. Z3 i" s/ u1 W1 X9 vs 10 = 9 > 10, l% l) E( V( m3 W/ f1 t4 O" q- P4 V
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The answer is 10.
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e.g. #2 假設7為較輕的一粒
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. t+ p" ?7 w# P1 V+ S8 u5 n  ]1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,88 g$ p3 O  Y% Q/ f7 [( ~$ s" @: R
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Round 2
1 S( H  L! a4 t+ V+ k5,6 vs 7,8 = 5,6 > 7,8
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Round 33 z2 O1 C% Z- p0 E( z* l7 P
7 vs 8 = 7 < 8
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) E! P$ S" b, mThe answer is 7., S% x7 z" @9 J, T* K/ U

, h1 f# C8 m, @& ~" a+ R2 o. H5 A1 s$ me.g. #3 假設13為較輕的一粒- f# i/ i$ l( r+ J! m4 D% I( R" V
Round 1+ F3 s7 R6 _( E/ c3 {$ }0 I
1,2,3,4 vs 5,6,7,8 = equal0 W0 B& g% z( z5 D
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Round 2" [$ T" t. I" S  r
9,10 vs 11,12 = equal
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6 Y9 q4 C( L' ?4 W7 h& b# j# lNo Round 3( _1 X7 ^( e4 P( ~$ e4 k
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The answer is 13.
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& Y, b4 @3 z; F+ h( R唔知我答得正唔正確呢?! 8 j1 I( `7 i7 A7 Q5 k

- o- D/ d+ r( K* Y+ i; G[ 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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1-6 vs 7-12
5 b( a$ H! u5 ~0 S  jif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time
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4 X, S% Z6 i! K$ I# b' @3 U" x' D% dSuppose 1-6> 7-12
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1-3 vs 4-6
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0 J. w/ ]5 ?0 O$ W6 Q, g0 y' qThen Weight the Third: X  G7 }- z# A. L/ R  R3 B" L
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Suppose 4-6 > 1-33 Z/ M# O. V4 y/ }
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Just like the first Step
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4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one
% l: j6 d- Y- w; H+ y/ S3 Dand so on......................

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問題第二步
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: p0 A9 Q" a- d/ V" |- YWeight 1:  1-6> 7-12
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& ?3 u+ d8 |: h% ?Weight 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???4 h7 \5 j: E" d
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========================================
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& {  |. L8 h& d問題第三步/ k) N( L! T) y0 I1 p: Z+ C* U
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Weight 1:  1-6> 7-12" F& f+ _8 `. U) H' r& [/ N. V# l  i
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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