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9 n9 U* ^+ e8 Q* {

, C0 C! _( o" O) o* }5 k4 C# W' l/ e, U『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)。
3 V% r  }/ |/ u- I* ^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: ) v; r$ K* y$ o$ i6 K! ]. e

9 p: i: T# ]. }6 |0 R- [' @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 V, z- v* g8 n" Y/ \) ?

! b3 ^# ?5 S+ E/ ?+ k8 t' b4 r2. 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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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
. j2 F9 l1 ]5 n4 q相信e條題目都有吾少人玩...

  }$ f* K: i5 S: A8 m我以前畫左個chart去答,+ w6 B3 J# a' v) Z; q9 [
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。( V8 S! W' H1 ]% a9 x3 z1 U
13.........; K' j" p6 y# {, a$ n6 V& p
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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,! q  C0 c; C$ |0 T1 ^
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:( k6 J7 X% w- s% N& O5 O! v' I1 e
唔識隱藏...已經諗到..

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; L* H3 E. g9 {% E4 vsor !!!....e加改左5 {; Z5 v) i2 ~" }/ O0 d
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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, D- X3 K+ M1 O: C  o9 ?

2 _0 s' C  t: D2 B" J1 d/ [[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:$ t: v" @  U# d, b( Y  W8 R! ?
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.0 L8 N: I! z& o2 m1 s+ u% q& n

# w- z) {2 H( R# {Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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9 N3 m1 O$ R% Y+ ^7 @PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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. `5 M$ r7 \' n# qThanks

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( S! B' e7 h3 R. L' U' E5 L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
4 _- V6 o$ a' t" w' W9 `, zif 1-6 = 7-12     13 is fake& S" \/ V6 f" U% {/ F

  G% d) f# ^' G2 D2 k. _% j5 kif not
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Weight the 2 time + t5 S" u6 d. T+ O: d$ I1 c) J+ a

7 e( [7 l7 k! d- E( OSuppose 1-6> 7-12
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1-3 vs 4-6 7 q; w  M, T8 R$ H; w
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Then Weight the Third  v: `" O7 `+ v. Y
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Suppose 4-6 > 1-3
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: ]* U% l' N) e; O0 L9 F5 V4 K9 fJust like the first Step/ ^0 e, N8 V( m9 u7 b( F
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4 vs 5 ; c! v# `. D; J
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if 4=5 6 is the fake one 8 z1 z% q- N) x8 r* j

$ n6 E% {2 A1 Z. nif 4>5  4 is the fake one
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( J; t5 K0 T7 q* ?  B" `and so on......................

hello1997

分3組4隻波子秤7 Y9 I# T  q5 p, A8 a5 o) t# s
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Group A: 1,2,3,4
! Y( W+ A5 j' E4 o4 \% U- [/ eGroup B: 5,6,7,8  @/ {) D* P/ z  B* b9 O5 Q) _/ u
Group C: 9,10,11,123 H% R4 V8 D1 s6 Z; E2 O
Group D: 13! A. h1 i6 O7 J7 D

! t1 S. \  x7 H- s' l6 p, hRound 1
: v6 [, ?; v- L1 DGroup A vs Group B7 `& R+ h8 f9 \% f  k" V/ t% M
如A and B一樣, 即較輕一粒在Group C or D
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7 ]& N2 A" A: |1 FRound 24 R$ n' m7 u  G/ d0 ^: E
再在Group C拆成:9 {+ @3 b6 V0 D% Q) `( H' z
Group Ca: 9,10& d2 X, Y! n1 M7 `
Group Cb: 11,12
1 m9 z- b0 X0 Q: d" Y9 a5 O然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, + ?1 |! n3 p/ I7 r' B& S
要再秤, Round 3, 之後便知答案.
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% n) Q5 U8 T0 U; ^e.g. #1 假設10為較輕的一粒7 Y$ N3 F+ m) `7 T
Round 1- ?9 P3 J6 O- Q/ A" ^
1,2,3,4 vs 5,6,7,8 = equal5 b( i1 o3 S% F/ X3 w# t3 g
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Round 2
7 x5 g9 ~# ]& g  I* n0 d9,10 vs 11,12 = 9,10 < 11,12
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Round 3# e: ^1 Y) ~1 V% d# H$ ?& L
9 vs 10 = 9 > 10' i2 Y% k. _3 t
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The answer is 10.
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8 B' o, T1 d( \8 ?. o  B9 ie.g. #2 假設7為較輕的一粒# @: v* I$ ^- R* \' [7 J" Q5 S
Round 1/ `- Y9 x% @. o# R9 T. R
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
0 |! ^. k/ i: {! J/ }% s- L5,6 vs 7,8 = 5,6 > 7,81 k; P2 a" t' ]! Y
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Round 3- H. ?$ a8 [* E: |8 p! x/ i0 y- f
7 vs 8 = 7 < 8
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The answer is 7.4 V8 T/ h+ l- B0 b) R1 e& W

2 ^3 a1 a; M3 p3 w* Ce.g. #3 假設13為較輕的一粒. E, X" [' j, s" _
Round 1
( D+ Y# Y0 x# |1 K9 J5 W1,2,3,4 vs 5,6,7,8 = equal
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Round 2' d6 E4 h4 e% L# ?
9,10 vs 11,12 = equal+ ^' X6 T, y- F' v, }
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No Round 31 y8 _3 }0 c2 ~5 I( B' ^

& z: E& X5 I% A4 q. S8 W% q- zThe answer is 13.- ^6 Q& e- d- K7 d4 t' Q

; W- B1 k- D; g- D+ x% J  Y唔知我答得正唔正確呢?!
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8 L: u) l( \+ A[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:  i* O  \/ k# z/ Z
1.. A) {! Y9 F! D' _$ X" W: d( {
1-6 vs 7-12
% e6 j0 P- n$ L) J. Aif 1-6 = 7-12     13 is fake
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" K& M' u0 r8 v2 `7 s1 j" ?5 y3 ~' oif not
5 r2 O9 u' G' {& F5 s1 c3 P& L3 n4 C6 O% v6 a( S8 }
Weight the 2 time   |0 s: p, _- d4 ?9 a
2 z5 F$ M+ W% e- ^
Suppose 1-6> 7-12' W5 e/ I$ z  F& I  ]4 [/ |
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1-3 vs 4-6 7 `7 |' e6 y- ~8 G$ L
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Then Weight the Third0 m  ?2 s6 j, z5 Z; E
3.. B. c" b- [7 n' w

% n# v6 G( S4 N- Z4 p! k9 g) gSuppose 4-6 > 1-3
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, A; }, I8 }5 X" dJust like the first Step
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4 vs 5 , k9 u% O1 q$ l! W- T
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one
" i" H/ a/ h( o, E* @and so on......................

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問題第二步# M- w+ D2 |# U2 ~+ w/ w

+ U9 V7 v' S! ^  c  f& |Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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# z/ l: L  i: n  D( R/ R你第三步点去搵 7-12 边一粒???
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3 Z1 g& j7 l9 `- b1 e========================================
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問題第三步
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! J0 Y; z  E7 f) f3 nWeight 1:  1-6> 7-12
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% h' t+ G9 B; @/ jWeight 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