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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& x8 @8 G' I  j" w8 O% q『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)。
% q% ^( I+ w1 l( }5 @# n  ]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: 8 Q3 F, K+ v! @7 \) _) _! `$ A
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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$ X& e9 B" I0 B0 U( }- U5 t5 [
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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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. {/ c9 M" H; B+ a, O0 Q[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:3 b' ?- M3 t& C7 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,& z5 g+ j$ p1 k7 F: Z
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。: E- f0 Y& c! o" X
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:8 Y  h( S) v: p5 f6 Q

9 D* g2 p2 I" d& b9 ?* m- x我以前畫左個chart去答,
) A+ m+ x, P8 b$ a# a1 y等我搵下...

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9 s( Y5 H  A6 E: j0 Q+ D5 m: j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:( x, A6 K  O; i& \
唔識隱藏...已經諗到..

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* [  p! N4 I7 z* f# x1 A( bsor !!!....e加改左
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0 f: w, X0 B: e0 X2. 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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2 H' x$ F- ^' p[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
7 f! c7 ^( E/ A, t; f; W9 \, k相信e條題目都有吾少人玩...

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& _) I7 b" G2 ?1 R; t; q6 P, P* R! JPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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2 F" p0 |' G/ P* j4 E/ `Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:) N; h, {8 _: S6 h6 \% f1 v
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.- _+ |  n7 H4 O
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Thanks

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$ m9 C9 @# i3 B$ Y$ _" X/ k7 S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
; x1 S* }: R% C0 sif 1-6 = 7-12     13 is fake% ~- p. D' t& A2 L$ ^8 F( I+ e

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Weight the 2 time
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  r8 E' x$ J; LSuppose 1-6> 7-12
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1-3 vs 4-6
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! n9 B. U% Q2 |+ z1 c) D: K! I) HThen Weight the Third! R% r% f& y8 _+ W: f! |
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% t: S) k3 {. n5 p- SSuppose 4-6 > 1-3
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Just like the first Step
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7 ~. @8 n) Y: g$ u( z3 {4 vs 5
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! u( k$ s% f) y5 U& `8 ]if 4=5 6 is the fake one ( y5 ^/ A) v% R6 Q5 h

+ V4 g9 C, \8 Y* X( oif 4>5  4 is the fake one 7 |2 n$ }2 N. ^$ R  s. M" q8 m
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and so on......................

hello1997

分3組4隻波子秤/ I3 \- f+ C1 v  o8 {' w- H
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Group A: 1,2,3,4# Y# v$ `6 n+ k$ J- W  L6 a
Group B: 5,6,7,81 [3 J# w0 T& m: H/ h
Group C: 9,10,11,12
  |2 \% n' A* _" j  Q1 ~& PGroup D: 13
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! W" H/ H$ S" i" dRound 1
! u" d" l( t# o5 i6 Y- uGroup A vs Group B
( T0 \( c2 i% s; Q: ]1 p. c如A and B一樣, 即較輕一粒在Group C or D4 j) k: @' e' f% @% L5 e
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Round 2
; a/ M( j* [4 w( H; u  P4 O- O再在Group C拆成:1 l9 I) j6 E( u9 d
Group Ca: 9,10- t  Q- S8 f) c" Y) [' m
Group Cb: 11,12
; z  s0 J3 I9 X% G- Z' t然後再秤, 如一樣, 即13為較輕一粒.4 U+ @2 I6 S: v8 w- v
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如不同, 即較輕一組有一粒較輕波子在其中,
" Y2 C$ E$ Z( N7 [6 C6 Q+ P要再秤, Round 3, 之後便知答案.
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0 B2 p  i2 ]8 o# l3 z% Q3 O1 Y4 ]e.g. #1 假設10為較輕的一粒
1 J" P. M" d9 U( g6 o" aRound 17 H  h# V- x( E. b6 Q
1,2,3,4 vs 5,6,7,8 = equal. t/ P( u6 S! [. l- U& D# M% j
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Round 2' P: e7 t3 F* h( O! ^) \8 {3 u
9,10 vs 11,12 = 9,10 < 11,12
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Round 3: a4 o) ~0 k3 O5 y
9 vs 10 = 9 > 10! i' U7 i4 s2 I+ }9 k6 F

* y4 o7 ]) s7 h: l8 Z" u' CThe answer is 10.% c( t% g$ K/ ~1 ?% I8 c- \" O* l

* f# f9 l; E9 K  s4 y7 P" Ke.g. #2 假設7為較輕的一粒
, o# @5 B) Q  ?Round 1
8 _9 C+ _* y% \- y! s2 Y7 m* a1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8% U3 o6 E) T* S0 A/ x: S+ d* C

. L! U, \) s' |' Q# r" qRound 2* V% Y+ E, P. {! D: a2 W$ [
5,6 vs 7,8 = 5,6 > 7,8
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! v, X& l" m9 \* n3 HRound 3
" u& k1 v' ^  h- ^; ]8 d% N+ r6 ?7 vs 8 = 7 < 8) C' `; R  ?% H+ s3 D1 d
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The answer is 7.
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e.g. #3 假設13為較輕的一粒2 s- @' _8 I$ a3 e5 }7 t
Round 1
0 a  I9 n5 P! L( t8 L1,2,3,4 vs 5,6,7,8 = equal8 D0 }3 w2 f" k5 L' f0 x
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Round 2* K# _3 {1 ]8 h
9,10 vs 11,12 = equal0 `/ S) o, L% i9 n  F, ~* p) a
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No Round 3  Q* [; \% T/ U# k2 R: W

7 V: x" O; \# Y. i3 ?: vThe answer is 13.2 c* @. h, n4 n9 I
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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:- s% u/ l. D' [$ J+ P. k  v
1.
4 K8 \6 f' Z& T1 x/ V5 G3 ?1-6 vs 7-12# B5 g2 d% r, h) }
if 1-6 = 7-12     13 is fake) i$ u% f3 w2 R% y: O4 l+ c$ ?- P8 K

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Weight the 2 time
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Suppose 1-6> 7-12
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Then Weight the Third
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% @7 W& B2 p2 o9 J" l6 ASuppose 4-6 > 1-3
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0 p. g2 I, ^  W2 ZJust like the first Step' f8 i' Q* k* A! x1 T
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4 vs 5
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if 4=5 6 is the fake one
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# B, q# L# r  {; i9 D' U/ Hif 4>5  4 is the fake one
4 I- l+ S0 k( d5 D# u7 p* nand so on......................

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( `  n+ j1 |2 q8 s問題第二步8 U* {# I0 b' x* f- R! {

( r% @  u; a8 r+ l: _' C" iWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-62 x6 ^& S2 f1 N: s
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你第三步点去搵 7-12 边一粒???( o' d0 y5 ^$ V6 }/ d
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問題第三步9 b7 t. ~& G( q3 ]# W3 p( `
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 8 _5 i3 _1 v) X/ `( g- X  Z
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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