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
& q/ l1 y" b. g7 H! ~  l2 G. ]
% y5 X( I% g" F; l7 f『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)。
0 f# S6 s5 B/ K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？』6 _0 E) W7 w/ H& ~
8 x5 S1 n, Z$ A* T5 n) E7 D3 u% x/ b
注意: + \, x) Q4 {# D& d8 Y
5 k+ \( D1 O+ X. O5 @
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
8 v9 a9 v( N& ^5 Z: j9 Y* T
! [$ y2 k5 k7 F- h4 w4 E2. 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! A1 _3 a. U4 e) A6 S
( I; [) Q  {, O+ \* J
[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:9 z5 z' ~3 g/ f/ U' s! g! P
相信e條題目都有吾少人玩...

5 v/ T3 \: d0 ^  `. E0 L4 v9 _
我以前畫左個chart去答,; [3 u2 D' K. o% A
等我搵下仲在吾在
" X& ~6 G3 N6 C( \9 S0 y7 f! T! `* ^3 v, n
當日用左37分鐘答１２粒波子，差７分鐘才合格。: ]3 I7 |" ^* K, B
13.........( n5 L1 F% m8 K: ~/ K
2 k$ ~; `7 X$ @3 @
[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:3 X  D: m: D3 |4 ^# J/ v# _! b
8 B- i) \. L7 N4 h7 J
我以前畫左個chart去答,
. ]* A. E+ Q! S% s& o" [# w: _等我搵下...

& o1 \+ P! e' p4 u4 C; s3 C+ v6 U9 v5 x
2 p) b7 R, P, N* R
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:/ C2 k' Z# s1 k# F# V* |
唔識隱藏...已經諗到..

! ^' l0 @7 D  q/ [  ]' [! l/ w* x

6 e4 \3 A* ?0 p0 z; y% L" Zsor !!!....e加改左! ^' [* W& q3 J# d7 o

( L7 O3 Y, ~. C. x* x& C4 G4 U2. 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, q. ]% a) a* m- W: b* V% Q

1 _0 ^* u* T8 l# n) n; 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:( _% s2 U' k; |8 s7 }. p3 U, W2 v3 n
相信e條題目都有吾少人玩...

& [) F( C# q" K& m

2 o" L0 z9 c2 j$ f/ L" G& tPlayPlay, Let me know later who has the right answer and I will add points accordingly.
  t6 M& Q% N! {/ i& k' c' Q3 w) r5 V* y: B: ?$ U
Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
2 b5 Y. O2 Q7 }# o( h; e& m7 E) H8 N' p. N
' x$ m: G- W0 W0 y+ {, }5 G; |
PlayPlay, Let me know later who has the right answer and I will add points accordingly.; f6 t' E" c8 {3 A
* {3 V8 q+ h/ |7 X) O$ c
Thanks

. J, x4 s3 S# L' E6 S. d- F' q) E2 W' M3 c) a+ D9 F' L
不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.2 q, G& R/ V' m
1-6 vs 7-12
  m" j$ T& ]" m, f6 Y0 hif 1-6 = 7-12     13 is fake- {; b+ G% u5 P- c
$ r3 B7 j6 @* D* w+ H8 B
if not
, D/ ~4 V" J2 x, f7 \* P* h, }4 o8 _) P  t) X$ u" R
Weight the 2 time ! w" x# K: h, N  X' r& h

7 g! Z/ ~8 B. Q9 a" s: WSuppose 1-6> 7-124 F& d3 D: {+ y! g

- W3 y" t' q1 w3 g1-3 vs 4-6
2 O, s9 C, S  k- C! l! M7 h4 U$ Z( G
Then Weight the Third
2 A1 h$ t/ ~& ^0 o; V. P4 J3.
2 U0 e4 q6 ?3 `; g' z! L7 {6 V1 _& F
& E1 m; _8 w: h: t% i2 _Suppose 4-6 > 1-3
/ O5 h0 f& [5 d  [5 P# k# ?! ]2 ?# `4 b( k; ~: `" l9 J" Y
Just like the first Step
+ W* ~0 T# h, N( F' c4 A
" f+ w% O6 U9 E; K4 vs 5 4 q5 u3 m. v! ?

' G1 ]; v6 D* w, s) Fif 4=5 6 is the fake one
3 \4 o" c) Y3 S% l* x0 X
; o) ?( t( s) e7 N; }. eif 4>5  4 is the fake one
2 y* Y+ g( F5 [; m/ m: E" B+ p+ r
, X+ C# l) I* t5 z* kand so on......................

hello1997

分3組4隻波子秤* g% ]3 o% \/ ]% ^( O' }5 P

! [. ^/ m6 z, fGroup A: 1,2,3,4  j1 l! j& ?( o% _( A6 E" c6 [
Group B: 5,6,7,8! j- \, ?* ?# V) y
Group C: 9,10,11,125 ?- B, q, U' ?- i0 p
Group D: 138 C, i! Z: q# E4 _" x- \

$ |" O+ u2 s$ s: i8 {! KRound 14 g0 M7 C0 O% N4 d6 ]- _8 S2 g$ h$ |& w
Group A vs Group B
: k. o  a$ \! L9 q" G2 V如A and B一樣, 即較輕一粒在Group C or D5 i7 H2 C% B. V4 m" k

! l5 C8 v' d4 wRound 24 Q; l" _5 n3 x0 I2 f
再在Group C拆成:  S! A$ z- Q  W; [+ D4 o5 c
Group Ca: 9,10
. h( P. E# n0 q- IGroup Cb: 11,12
8 [- ?, K& U: A2 P- a然後再秤, 如一樣, 即13為較輕一粒.
8 f" S- ]" N9 K
$ i% @; H3 K/ a! L; q3 S如不同, 即較輕一組有一粒較輕波子在其中,   q7 y7 W; p, K0 W: \% j
要再秤, Round 3, 之後便知答案.4 c: C+ T( @8 `1 Q' c6 |! T9 U6 O$ e" B

( P; w# Z; m# h' p) C/ J, p7 g" Te.g. #1 假設10為較輕的一粒) Z7 @( O- P3 ^# `7 u5 v
Round 1/ Z1 y' i6 c4 q3 E7 R; Z: ^
1,2,3,4 vs 5,6,7,8 = equal
9 c! f2 k2 W7 q  h# p2 N$ \8 V# f. j* U1 I. [$ w" ?) T8 f# K# A
Round 2
- L- L* i* I" |8 K* {9,10 vs 11,12 = 9,10 < 11,12+ |8 I& j( I; E
6 T7 r3 v. o4 ]& u$ S; D+ b
Round 3+ [! A/ N7 D! I- T4 _* ~3 r6 V
9 vs 10 = 9 > 10
( q+ E# ?# e3 k+ t) D5 v$ w. p
8 v. u% [7 Y' N0 h- \& Y, Y! qThe answer is 10.) I1 w, g* V3 ~$ F, \

5 i1 \$ |0 J0 C/ s5 N3 |e.g. #2 假設7為較輕的一粒. E- K( p( M1 l7 N# N+ R
Round 1. |  [# c7 l9 q0 D( b: a0 n
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
+ P+ m/ |6 s! q( D) N. X: I4 b$ y8 W1 a+ ^' r1 A  v8 w
Round 2* }$ S" D* i. b% ~5 a6 W
5,6 vs 7,8 = 5,6 > 7,8; ~# {- `* E! v2 C4 r

: R" z& y: g) k$ c7 b; g- JRound 3
$ @) E( a: @; `; d7 w& z. ^7 vs 8 = 7 < 80 Z% m' c, q. p2 g2 W; ?  f+ @2 L

" s1 N; L" R" u: r# N$ zThe answer is 7.
, t2 r7 q5 z  j8 }# B
) ^, Y9 q+ {! ~: m! ze.g. #3 假設13為較輕的一粒$ `! `- ?- E& ^1 w8 G2 C
Round 1) d7 o( F" F% r
1,2,3,4 vs 5,6,7,8 = equal* g3 a% C5 s. i+ t5 \

5 u/ {. B6 O8 E; r" D, cRound 28 o! w  b! C. @4 Q7 j
9,10 vs 11,12 = equal* \* N* f  P* o" A% Y( a" k: G
: Z& S! S2 h$ ?: y9 w8 ~2 B
No Round 3
2 k* t5 E( B/ e9 j! [% ~$ G6 q! V" n) w/ m% p, l0 f' L, @# e; X' f* ~
The answer is 13.
1 o& i( U4 x) K- |% G+ n3 D! l9 O9 {6 d7 O3 X
唔知我答得正唔正確呢?!
, W6 W( W0 [% n! _
( ?1 i9 m/ r5 V2 r! _4 z; B[ 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. F( h' m# y5 g1.
! {0 y  l0 B, K* r; H1-6 vs 7-12; Q- }5 C2 ]. n) e8 W$ Z
if 1-6 = 7-12     13 is fake, q( S+ X' H, b" ^7 S
/ b  T. J* d' ^$ S/ x6 w1 I
if not 6 `) l% }/ _' o) \7 d

3 {: y* X1 X" o+ Q7 e! SWeight the 2 time
5 ~: v. ?: B$ x1 h- ~/ C; _# B9 j+ w5 U1 S" P+ ~
Suppose 1-6> 7-12% v2 Q! l" p* T

* y# V3 e9 n$ J! W# |1-3 vs 4-6 # ^; s2 B0 x5 [. S' R
- V/ {$ J( P  b7 r2 Z4 F
Then Weight the Third' q  D! N3 K$ I. W
3.1 W) d: t8 v; E4 M
; M$ u+ A% j( k9 @5 a+ e( A6 s- @+ Q
Suppose 4-6 > 1-3* R1 W4 @1 p5 H( X5 G+ q2 K

5 B5 |6 _- t+ B1 zJust like the first Step
  U9 r5 Y1 o" l! S  f- Q$ D, h) ~! N9 S+ \0 t+ u9 @+ I. X( b0 Z( Z
4 vs 5 * R2 Z7 u- W2 S( h

4 o  q7 r4 @' D. X8 n2 ^% p5 tif 4=5 6 is the fake one
! k5 Q; u% `) _4 j. Y3 ]. J; Y7 y7 O
if 4>5  4 is the fake one
, g2 J. d" y/ `; |, ~0 H$ L7 kand so on......................

  f8 D) f) l" n$ v% b

: t- M1 s4 _: N8 ]- }2 z+ ~4 w. U
, D. x2 M/ U4 s* d2 S: E: B問題第二步
" u' @' [0 P/ w. K: Y
$ Y- }6 q2 C$ Y- }Weight 1:  1-6> 7-12
1 K6 M  u) k6 Q7 |- u6 v
, _, Z! A, u. j9 z! N' E8 QWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6* ^. U) @$ y0 B0 X7 D
( m8 X& Q5 C. i! f' s2 ^
你第三步点去搵 7-12 边一粒???
2 T8 X0 ]6 |& {  f- ]' _, d1 Z% a: V. M# r  s2 F
========================================% n9 R% t( d; u+ X# c1 F" D6 [

$ E" S8 _3 a& q- w- O4 z- v問題第三步
/ l$ d* C+ X# u3 W
# ]9 T) ~" M/ N6 @* yWeight 1:  1-6> 7-12
' G% B! Q8 ]5 h" l% b* Z
) z  x- m9 a% B" v+ D& T, uWeight 2:  4-6 > 1-3 + c! Z4 }; I" U9 L5 P/ U( m5 B1 i) `( p

7 A5 B/ {( c: T  S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