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
+ M* |5 X; Z4 m% c+ Q
: r8 e; Z. q& @5 W( v『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)。! b8 m0 `2 M9 j! B1 g1 b
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？』! Z9 \( w5 l) ?# C* }* ~9 V
! G0 o! o" Z/ b
注意:
+ `4 Q! A: E: Y9 t( Z- o
! I  w: V5 v9 ]6 c) A7 \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
) i1 E" @' J$ ?# y4 M- u- ?8 q2 n9 [! j' v& J
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5 \+ K/ a  z- M
0 ^" o5 }' j! ^  v4 E. `
[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
# ?  t! W- }+ S% F) p; d: f相信e條題目都有吾少人玩...

" o+ I% R5 R9 |8 ]5 f我以前畫左個chart去答,% D. A4 r( U8 R. [2 M/ k  x
等我搵下仲在吾在
/ W0 b% W" G# M6 w3 j* s* V4 ^! R0 y! v1 ~1 q  y8 b3 f- m# M! X1 m
當日用左37分鐘答１２粒波子，差７分鐘才合格。
# z6 {( i- Z+ m  ^13.........
# p9 f) K* W! a1 k: [0 x( T1 J- `: E: m* ^, A
[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:+ @! N3 m$ g/ [* @

1 X+ D, Y4 }# Z2 H2 `我以前畫左個chart去答,) ?! O# z2 n: T( s! i
等我搵下...

8 X) J: @$ V' l: w' x
0 _* P8 X! w. |5 u6 E, c
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 w) z3 P. ^+ l
唔識隱藏...已經諗到..

% \. W4 T, }0 R; v% j1 S
- V* }% ^0 b3 h2 W+ ]: Y
sor !!!....e加改左$ _% J0 ^' [5 k5 s% m

; L' q* s, O1 y! Z3 Z% G2. 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
- m8 C, f% B# t$ J
0 j- a5 u" `2 u  B- H! s" j' ^. L[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
) K/ Y% F( y0 t( v2 u, o+ g& l9 a( n相信e條題目都有吾少人玩...

/ b, l6 f1 d7 Q5 E5 ~5 X% y( J; Q
% d. ~8 T5 d" ^1 }3 }# b: G
PlayPlay, Let me know later who has the right answer and I will add points accordingly.' U, M3 y& K/ r% _) i/ e
2 p0 c7 ]' ~) G! k$ @
Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:+ L, D1 f0 {" |

- M* E0 W5 _* B# S; C4 \* ~9 U- [1 g8 g* @+ O2 [
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
3 y2 ~  @+ u4 h" c6 P5 d
) ?6 g8 O& X& I. _6 Q1 ]1 r4 U3 k8 uThanks

+ E4 [. ~- I# Z

4 m0 ^8 T0 i  c" s不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.. A6 T- f0 e. [  F
1-6 vs 7-12
4 v5 g4 T, c* R5 B% }0 j9 i% {if 1-6 = 7-12     13 is fake
: d& |5 }4 t5 q! h5 j! y8 T* ~0 A: [0 Q* `2 ]% G
if not
3 p  z$ Q6 |2 z% Z, Z: ?* T: e. }' A/ j2 V- x$ Y
Weight the 2 time
. m; I1 M0 r8 A! x5 }
& t' R9 R, p) _% q# sSuppose 1-6> 7-12# \$ ]7 h- G; J2 J2 n
( W/ r" L( ?7 [( \5 Z8 d
1-3 vs 4-6
& m/ ]% s* R9 r- I0 [7 `1 M, C5 D) B* j
% H* }& T0 s! i4 M! x* ?Then Weight the Third! ]1 E8 w' z4 |% t5 R" j* W
3.
/ I% l/ U% d+ s5 t* o% \; \- H; `5 K1 X" T9 ?) V' F
Suppose 4-6 > 1-3: X2 ?  t1 a' p. {

- N' h3 Z' x7 I' H1 A/ L2 s3 EJust like the first Step+ w$ _$ ^/ p2 E5 s' [

. c8 `3 _$ [& Q! G- k4 vs 5 9 Y+ b4 g& ~/ b% S

7 q  Z7 b7 y, {, O/ mif 4=5 6 is the fake one ) b5 M+ B9 x' L

" ~' Y% \6 z1 p7 \! }/ X1 I. ]if 4>5  4 is the fake one ! x( X/ a7 }" m( F8 o; B8 H% W" S
$ `+ c$ b8 g: }8 `% C
and so on......................

hello1997

分3組4隻波子秤
0 f1 N' b4 w; r3 R/ i1 F( t% B* f
+ P: d# D! H$ O' X1 ]Group A: 1,2,3,4
8 Z8 D9 o0 R- C0 YGroup B: 5,6,7,8
6 R0 b/ {6 M5 |( }& bGroup C: 9,10,11,120 r) Q) ~2 W% T5 S
Group D: 13
& F" M' M2 o% T+ j: I0 H, p) Y7 b' m9 @$ ~7 S
Round 1
: y- m/ n0 z! P% T4 |5 P9 aGroup A vs Group B- i1 p! X5 v. U1 O+ b0 _
如A and B一樣, 即較輕一粒在Group C or D. l0 H2 J$ \  y
0 R0 I9 v- {" {" u; ^
Round 2
  ]7 F5 U/ D. D# E; {再在Group C拆成:
/ Z" A/ J5 N% Y. ]Group Ca: 9,10
- ~3 f. ]3 f8 F" f- LGroup Cb: 11,12
, A; V* ^' D  f然後再秤, 如一樣, 即13為較輕一粒.& L" q' J! ]/ y' V  X7 ^
) s* [# ~9 y+ b' Q/ f& d: H5 \
如不同, 即較輕一組有一粒較輕波子在其中, " @' J6 l8 I" c4 B2 i2 U3 h. H* T
要再秤, Round 3, 之後便知答案.$ q7 Y/ A, @: T7 E
) `6 C% Q2 h$ V7 I/ L9 B$ A" G
e.g. #1 假設10為較輕的一粒
4 I; a+ B6 g( z. s+ ~Round 1( |/ E; I* @" M' D
1,2,3,4 vs 5,6,7,8 = equal
3 T8 _. D5 P' s% l. i+ I
: t. |$ o9 I- a/ |Round 2
6 G6 R0 |) A; H! i" \1 h2 M: `3 g9,10 vs 11,12 = 9,10 < 11,12
8 r2 H- L# E3 h  B! ]6 d" q5 z6 G# s1 Z+ |& d
Round 3
  G# n0 b- K- I8 w9 vs 10 = 9 > 10- n3 Z( m" }$ G% n- E1 w4 M
2 ]" [6 j4 U; P7 @0 d" e
The answer is 10.  {- |+ ]" `4 o' f( W4 g7 a5 d

: c# u; E/ X0 h+ Ne.g. #2 假設7為較輕的一粒
& Z( d% c5 i9 m/ j  ^Round 1. o2 j. u" I2 ^3 o
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
$ `4 U: I: T* d) }, _! I0 X
3 s0 A; e3 I: xRound 2
" h! ?( _9 P* B4 [1 M- z* S4 P2 l- ?5,6 vs 7,8 = 5,6 > 7,83 d. t+ d, ^" t! g: p( I8 Y
( @, _2 C4 \; w* m5 w, V7 @) {! y# ?
Round 3( B4 F( J; A! k% D" m0 g$ g4 d
7 vs 8 = 7 < 8
$ h* p" G9 J4 W
8 W1 x1 X8 r) Z+ m' A7 `' YThe answer is 7.6 w$ {3 a+ g8 a5 b/ U
" W& S( s4 Q6 K  b0 O
e.g. #3 假設13為較輕的一粒
6 @( }: F% a" h7 k0 i7 W( DRound 1) k* ?- g7 P  x$ S+ O& p
1,2,3,4 vs 5,6,7,8 = equal
' C3 A- V5 v4 G9 O) v+ E
$ }. q4 K: z, ARound 2' m) z2 |- W' R* ]
9,10 vs 11,12 = equal
" e$ \4 m# s3 K& [7 l: n2 i  h% I. ^$ m% b* p* H/ {7 Z7 k, Y7 l
No Round 32 H, l/ P2 f& ~" K9 [8 D

$ ]3 J, o7 m! q! T7 l6 C9 K8 fThe answer is 13.
% q; r2 H. d* F% J( i8 z: U9 D4 k7 W' t' E% G: e6 ?
唔知我答得正唔正確呢?!   C* d- f0 i: g) M

( n9 O& {0 j9 y( k) E[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:
1 @) p% v9 F, Y2 J, h, m8 x1.
4 [1 K" |: A3 D% g9 U( I6 e# R% Q1-6 vs 7-12
9 L' G5 k% k& {6 w6 Sif 1-6 = 7-12     13 is fake
2 a% [; A3 s) G* m8 g" o. r! S  x1 t- C8 F  o
if not
1 g! h* X4 V6 n$ P5 @# u
& J% H! ^5 l6 K8 i% OWeight the 2 time
' n7 _& o; o- Q- \8 y" D5 i! B+ j
Suppose 1-6> 7-12
% T# M6 u3 S0 g7 R. E- q
% t$ D$ R! P. \2 E, P1-3 vs 4-6 1 p8 |5 O5 B4 {: a" U3 o3 P; c

' L% p5 G$ @) _" Z0 @Then Weight the Third
% ^$ q8 J. [$ I$ H7 x) j+ ?+ f3.
) O. C7 a! o6 V/ J7 Y1 H' U+ N% h
Suppose 4-6 > 1-3& o$ |& `* s& `+ a

4 Z/ `9 m2 k, z- d) S4 ]& HJust like the first Step' X1 c3 {& b0 @' h
9 P+ Z1 N' p0 T- q" N1 t7 N0 Y
4 vs 5
# x3 D2 C7 Y% K8 Q6 }+ O$ B) b- m4 W7 L& E- F
if 4=5 6 is the fake one
" }" `' t4 [! |2 w; n% F$ A. T* x1 J& ^5 k) B/ s8 ~
if 4>5  4 is the fake one % u# z4 m0 v+ D
and so on......................

2 d/ y) y0 p& `6 ]: G
; ?  _0 `. l. u! V2 a$ g6 i. B
/ a7 F4 w1 M/ [( ]問題第二步8 _' E5 P: J! A. r( T! \. z
3 v/ [/ G  {5 D
Weight 1:  1-6> 7-12" V! e2 Y# Q1 E8 V
7 ?* _7 n; A5 _  @9 R# J; h6 m
Weight 2:  1-3 vs 4-6 , if 1-3 = 4-69 j7 n# U0 q  @0 @2 v) E5 z. j/ a

) U; ]& c' V3 U, Y7 L; S$ M& Y* s3 _% |你第三步点去搵 7-12 边一粒???
/ N, y' f3 P5 B: ^
- E, l% {$ b6 p% \; c5 U' A========================================
; h0 ?! m$ B  [9 v! _5 C
, `  y. w' b( P' ^問題第三步4 N- p% c* T" G" G0 i3 j& P5 y# u4 ~
6 p; M4 ?- a8 I3 A- a: K( {
Weight 1:  1-6> 7-12$ e5 s  Z+ t( z% y
- H  K/ p- i+ j' {/ R0 g9 |, @/ H9 t
Weight 2:  4-6 > 1-3 4 Q  \6 L" w* C& U0 z8 B

5 ?: A1 \9 G( _4 a' W4 l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