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  T; E  F" q  o6 ]- R+ ~
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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)。; h/ h" \  E) |. `# b6 D: _9 T, ]: 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？』
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注意: + P- H$ h: W0 R4 E
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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# H2 \- e3 V+ i6 k/ ]0 f3 x
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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:; }, L" f) U  H4 P# {( `2 O) z
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,
$ n  R* H4 U* T% _' `8 g$ W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。
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! C6 G& J# B( ?: Y+ d2 D" {5 a+ b[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:) @, p" y: F: ?* P
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我以前畫左個chart去答,+ s4 ?  ]5 |( A) D: N
等我搵下...

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/ O3 @2 W# @! ~6 K2 R" L$ l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:. ]3 R  l, r  z4 {5 m2 \
唔識隱藏...已經諗到..

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sor !!!....e加改左7 r) d1 A% l+ |* m! b

( V/ A7 b* b+ U4 T4 Z  z2. 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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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:% }. V7 x9 P0 ^3 G7 q5 A9 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:) T3 m3 I$ q2 n, ^) Z3 C1 l

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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

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; Q; r% Z2 w) m: l% i7 q" V不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
- [! y, i6 |2 N- `, q6 s4 y1-6 vs 7-12$ D% _1 S; J' I% O* l
if 1-6 = 7-12     13 is fake
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Weight the 2 time 5 d6 s3 i9 s0 T4 R
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Suppose 1-6> 7-128 o! x, v& [. Z0 q' ]# z# H) c
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1-3 vs 4-6 # v0 f5 I+ W" y# h. N, F& _4 U

  ]* o7 y- w6 D( {' B  u# \Then Weight the Third3 ^; z6 b& q  Z$ E! L: I- s
3.
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Suppose 4-6 > 1-3
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% o& C& B7 V9 y/ s! T; g$ c6 RJust like the first Step7 R" a0 j' U7 F' d' r9 B  S$ z. {

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if 4=5 6 is the fake one + O( A& y8 K" G0 v% F

" H) }5 v: B& c3 E$ \$ M2 f1 ]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
' S# R/ U6 Y+ `( k0 U- PGroup B: 5,6,7,8
; K: G  {9 F  z; m9 B: xGroup C: 9,10,11,124 }# @/ c% l2 v
Group D: 13
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: X" Q+ d& B6 \# I' k2 CRound 12 i1 S+ C. w. ~7 D3 x
Group A vs Group B' h0 j  F+ Y2 ?0 y6 ~" ^
如A and B一樣, 即較輕一粒在Group C or D
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Round 2, q, ~. x- U! ^0 W7 V
再在Group C拆成:- {& z9 K* a: F1 l& b. F
Group Ca: 9,10
3 ~9 l/ \9 s* B, VGroup Cb: 11,12
4 q& a0 b. z6 Q0 x& P9 h9 Y3 G然後再秤, 如一樣, 即13為較輕一粒.
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" f0 d, G$ r( |& i: Y7 {如不同, 即較輕一組有一粒較輕波子在其中,
$ T) G) u# J  j* W0 @要再秤, Round 3, 之後便知答案.
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  {; s' f- v9 _, oe.g. #1 假設10為較輕的一粒
1 S& P6 K: @) ~) I) M6 |Round 1
% A. c5 Q  g% N% G# G1,2,3,4 vs 5,6,7,8 = equal
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Round 2; T% i9 a8 n  @6 e
9,10 vs 11,12 = 9,10 < 11,12
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Round 3
" W/ f" ?/ I) H6 u- @1 O: x9 vs 10 = 9 > 104 K) B: E' v. i& k; g7 q
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The answer is 10.7 D7 g- _1 l: |  Q9 U
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e.g. #2 假設7為較輕的一粒
7 D& L( v  ^5 D* U# b5 g& ?Round 17 Z3 P, m- Y, I% i2 `
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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( n7 r  L  h" C9 t% P7 T9 GRound 2
1 X( F& q3 }: p( m5 N7 O5,6 vs 7,8 = 5,6 > 7,8
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; d3 L, c, j" Y1 Y( NRound 3
5 k! I, v; g  ~7 vs 8 = 7 < 8
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The answer is 7.
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# a: }& C6 p1 V2 je.g. #3 假設13為較輕的一粒
5 _8 |' {! t4 nRound 1: f, e& {( [  Z, P, k7 I3 w: r2 q* W
1,2,3,4 vs 5,6,7,8 = equal5 i1 C$ \1 y8 {, H" R

$ ]# @$ s% u) y' D: wRound 22 ]8 n2 ?! E, l" U: X! R
9,10 vs 11,12 = equal
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, X- `+ w: f5 j0 lNo Round 3
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The answer is 13.$ R! s0 Q  M& V% x" `1 R- V1 I7 g$ ?" t

4 C3 x9 [: v# C3 r6 a+ {. i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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1-6 vs 7-12) i9 ?* e) j: S( v" p1 N* N, J
if 1-6 = 7-12     13 is fake* j- x, V& F9 C! G( {  ]. f* j5 v

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9 L) q7 _/ Y, I' ?& n+ B  N/ l; wWeight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third( h- y) T5 u# e3 h' ~
3.
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Suppose 4-6 > 1-3
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/ P# {8 N1 g9 I$ b! wJust like the first Step: ]$ s3 Z- @" g. s  C
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4 vs 5
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+ W7 e/ |; J. e& Gif 4=5 6 is the fake one & Z+ p+ g, Y" P1 v, i7 |

" \' X1 R/ S# x4 e9 m1 d" A/ F- eif 4>5  4 is the fake one 2 d4 F# z  Z3 j, Q/ _; u- p8 b& a  a# J
and so on......................

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% \; a5 L$ x7 I7 H6 @$ H問題第二步
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Weight 1:  1-6> 7-12# A6 s0 q8 G% q+ @. D

1 T" v' `7 W2 a* [9 YWeight 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???' ~" v7 z: G2 v+ a' H; r  {

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問題第三步6 I* A+ J' P- k' C* T0 L7 Z) o& x% R
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Weight 1:  1-6> 7-12
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: e  d2 s7 W, |4 iWeight 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