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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/ O  D8 d) B( g『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 A$ V) H7 y5 P% {5 o3 u8 X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？』7 s+ p7 y( |+ o+ Z) f' N+ z) l

9 E9 A# R2 V7 P; P注意: 1 g. C, T' ~0 l$ V( m

7 N: U* |% i) ?" [! d+ m1. 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) f+ C4 `3 C' ~3 P0 ^+ F

8 N7 k# ~  H8 r) z, j2. 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) K  H8 l$ R( m, b' K* {" v; O
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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:$ |/ m' X- F3 I( W
相信e條題目都有吾少人玩...

. \: I/ x- I. L) `4 ^0 q我以前畫左個chart去答,
. i( H: }5 V& ^1 ?7 m% _+ ?) Z等我搵下仲在吾在+ G  n6 j0 ?  T9 ?6 d- ^
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
+ {9 ?" V% i- J; O3 E. t13........." o' m9 _: E' R: ~
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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:
! a9 w) F8 [) S7 G/ E& ~9 `3 D$ I9 l! @9 l2 G8 i3 m/ C" o
我以前畫左個chart去答,
: B4 f+ X5 u/ }8 I9 }等我搵下...

  |5 I2 S/ l! F; e# \4 e5 w6 @# v' F; e2 C& s
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:
+ p, j6 y! @' E- `2 {唔識隱藏...已經諗到..

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& s, h/ H" j% k, J! Y5 }6 zsor !!!....e加改左: W, q# U1 n3 m0 m' w! ?

; H# p5 o# z# u8 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3 _0 C! {, t3 [. n: [* `! ]& z

( `* n; T0 \) e* P7 L- G- D; s[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:3 U/ P* \4 ]. {6 B
相信e條題目都有吾少人玩...

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$ V! E/ B8 L7 v7 I) RPlayPlay, 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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PlayPlay, Let me know later who has the right answer and I will add points accordingly.) e: b! u. y  Z0 ]& P) }

3 e% F$ }2 M+ J0 h* N# ?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.
% j3 D. v( S% v. U& Y" X6 m0 X) m1-6 vs 7-12# e# [3 l: y4 G5 F+ X( @3 n
if 1-6 = 7-12     13 is fake5 Y) ?7 P2 r0 v  q3 O8 g. g

! C& X& c* ~, z, d1 z; iif not / U/ _) M/ z. J2 f
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Weight the 2 time # R- ]5 q# ?7 V- i$ l

. o! ~/ S* w$ |: YSuppose 1-6> 7-12$ s8 Q$ e2 o! W- M% |- N
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1-3 vs 4-6 ( t5 a7 _% R7 J1 Z1 D* ?$ w

+ J9 O9 q  J+ CThen Weight the Third, f" _. }% r  ~% W* O7 @, F
3.# o3 ^7 q' y1 n3 P4 H* ^

* P9 m. g7 i! @8 v9 nSuppose 4-6 > 1-3
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8 f& E6 C$ w$ q& ~9 x( ?2 PJust like the first Step
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; G# k$ a$ _* C) e; I4 z3 g4 k4 vs 5
& E0 |, p, |$ a2 f- \  T3 ]2 q; E5 _' W! u& A' Z! s! Y
if 4=5 6 is the fake one % q" O7 H. y$ O
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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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/ y2 u+ R3 m+ R% f7 E4 d! lGroup A: 1,2,3,4* i2 F5 }) ^$ D
Group B: 5,6,7,86 y. p  u7 c4 x' l( t  I4 c
Group C: 9,10,11,12
5 `0 G6 A3 F' F3 c" \Group D: 13
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$ E0 D0 m# t$ ]3 j. d* b0 lRound 1! {9 k7 {9 e/ z& Z' O# y" E
Group A vs Group B
4 g0 Y9 o. J5 ~  E如A and B一樣, 即較輕一粒在Group C or D; b3 s  E: T, I' W1 Z
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Round 2
& `6 d, ?( o& y& N. r, u! S1 ~- R# ~再在Group C拆成:
' ^8 l7 b& r! S- U  dGroup Ca: 9,10# P6 _, a1 r* H9 w# w
Group Cb: 11,123 N) T# |% Z5 q% H
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,
% ]9 B7 n, @! G+ e6 q要再秤, Round 3, 之後便知答案." v7 G4 N! ?0 L* f5 w  U9 H: d

3 a- a' v$ [) He.g. #1 假設10為較輕的一粒; ?7 p$ [5 o, Z3 g8 K/ r
Round 1
- X* T) o) f" c3 n5 U, j- e  E1,2,3,4 vs 5,6,7,8 = equal
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Round 2
2 C5 q. f& r7 g9 P! r( I; C- h9,10 vs 11,12 = 9,10 < 11,123 E, Q8 M8 R% b( p
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Round 3
: J+ N- D4 x, ^" R9 vs 10 = 9 > 108 n1 ^/ \$ m0 R7 t( ~! Y9 D; [

& m- J5 k% c. S6 G" AThe answer is 10.& _# [" p: J* R* {

, r, U! N/ Y* {0 I, je.g. #2 假設7為較輕的一粒
  z3 A5 X0 v3 @% t/ {, SRound 1
- ~! {  m  K2 c' J1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,89 w9 Y5 [* Z5 D% t% F/ g  f
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Round 2
( K" d( l& O2 ?4 `/ }7 i5,6 vs 7,8 = 5,6 > 7,8" k* d. P& i: V9 r+ c

3 q( F' y& Q; k9 jRound 3" s7 h5 ]1 H, ]9 E, u+ P6 `
7 vs 8 = 7 < 8
# [( i. ?. {9 y+ |6 m' E. Z
: ]* a$ N6 Y  |- |The answer is 7.: n# m/ X) ?* ^) l8 s  ]$ M
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e.g. #3 假設13為較輕的一粒
( B; R2 I" W! ]' W6 E. i5 FRound 1
$ a3 h9 L. x* }7 z1,2,3,4 vs 5,6,7,8 = equal
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4 R0 Y! b' X& ?" c3 C) e: dRound 2( p  @0 z' \6 k# U1 s4 B* Y  q1 s
9,10 vs 11,12 = equal
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No Round 3
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" H/ Y- Y$ w. U& P! UThe answer is 13.& t3 B; z: a- z# 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:
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1-6 vs 7-128 T' K; X9 ~) s
if 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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* n9 ~% x6 a! fSuppose 1-6> 7-125 s  y# ~+ H% b, `, [4 ^3 H, f6 A: j

. H; B& x, A& H' M' j" b6 q6 u1-3 vs 4-6 ; |/ z9 u2 h1 K- W9 Z: t. a

+ ^5 i) o+ Z4 ]9 T" vThen Weight the Third4 ?5 z( U/ s* A, O" G# a7 S
3.5 a" L1 O$ a. H. I' V2 j

- G& x+ q( h# y& Q2 A+ M3 m7 GSuppose 4-6 > 1-33 D: H  c/ w$ g2 E, n2 Z
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Just like the first Step" t5 e. A+ Z: T# ~8 y

- M  r) e) Q; ^# i0 c0 _4 {4 vs 5   x: }1 ~3 m4 z3 |/ P

& J( u* F# e7 x* e7 t# F) bif 4=5 6 is the fake one - x2 f; r# ~4 \) ?

1 q5 d& j* g4 A" G# Z0 \% c3 X! ~if 4>5  4 is the fake one ' D* w8 G/ N2 s& ^0 y! r$ l$ L
and so on......................

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4 q4 S% x+ J+ T8 ]6 S: o問題第二步4 l! i+ N8 C( q- x
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Weight 1:  1-6> 7-12
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! \  U# O( c+ w* ^% ~) b% ~Weight 2:  1-3 vs 4-6 , if 1-3 = 4-61 i+ F( N. l1 o# _1 P: D5 g# w

: c( @! v. ^- [/ m. N  n! C" ?你第三步点去搵 7-12 边一粒???( n, t( F+ c& p- h0 i

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問題第三步
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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" e% X- m4 A3 A9 [. B* W4 M% W8 v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