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  C- h7 D+ l9 [' a  }$ X
4 E$ I) g( x4 ~3 \$ j$ i3 J
『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)。
, J$ @8 D* P7 @% S. E0 U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？』/ Z) J, Y5 x) f* Z: [' i

8 @8 Z7 w3 \3 A6 i+ O5 ]/ H注意: & i; }5 L( M. `2 U
5 u  j3 S7 D% K* L6 ^
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; R7 k- I" @$ W
) H3 A% t9 N* z# ?; O# i
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
/ L. M2 v  y) f% _2 Y( t1 S0 A) b, c
[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:7 v7 \  h# z6 s1 P4 K
相信e條題目都有吾少人玩...

  d0 u- K/ L  b  i6 p9 x2 m
我以前畫左個chart去答,/ r7 C2 U% X4 L
等我搵下仲在吾在5 }+ B8 z" g$ H& v& A. u' d

0 L  ~# I! A( T* ]& s3 D當日用左37分鐘答１２粒波子，差７分鐘才合格。
) p& H, B2 l+ T' d8 ~13.........
+ L9 ?: y1 }4 ^
/ |6 o8 d. y, i9 N' M[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:7 c, k4 h! H" i& D* L/ O: H* C

( w/ m8 O; h2 Y6 ~4 d8 m/ X$ S! B4 L我以前畫左個chart去答,
: Q/ V5 n% F' }0 {5 m+ c/ M等我搵下...

7 S$ m3 E2 t* w: a1 ^% U
7 a2 H$ F# ^3 t7 v" r& ]3 M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:5 s. V) R* ~* K8 Z% {' U  }
唔識隱藏...已經諗到..

7 x2 \6 D+ z) M' ^
2 V9 p7 t( d3 e# {" J. W9 |6 F5 \
sor !!!....e加改左
4 c4 }+ R& e$ e, M  Q$ R" e- H0 M! z: ~6 s5 G8 a" f
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, ]6 w+ G+ E2 d8 `/ ~* \; X

2 U( B9 _( X, V$ C[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
2 ]% X4 i9 v( V* S. m# }相信e條題目都有吾少人玩...

; ^2 l8 F" c) N$ Q1 w1 m5 ^9 g9 z) m1 j# m* G/ X* {2 ^3 J8 G
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
2 `2 \$ ]( }4 v
- K0 `- k1 t: ~# \. u7 Y  ]: J7 g4 kThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
, S; d( w+ w6 G2 v
+ b  Z( l! x' H/ ]
/ v" G2 f  E3 f( Y  r6 z, N" cPlayPlay, Let me know later who has the right answer and I will add points accordingly.
  E  a+ _  B& L9 `
  {. e( r0 \& @+ G' IThanks

" R! I. z3 \7 y

; V" t7 d" U, k: p! L不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
- c5 G. a  `4 k( \+ A2 S, M1-6 vs 7-12
: z1 s) N6 v; _0 ^  R  {3 `% \if 1-6 = 7-12     13 is fake/ @( D$ h: E; o+ m6 \% L

, Z* f$ p6 t1 @5 J/ K8 Z* Vif not ; A! Z! J. x" g. G. V$ `
5 D2 n( h+ E  n; n5 E: f4 C1 y
Weight the 2 time
) _/ i+ t/ x: W* N
) [; `4 C" Q" v' |Suppose 1-6> 7-125 G1 T' C# ]. F5 G1 ~) r% q+ ?
3 V* U, U0 m% c/ v  S  p$ K
1-3 vs 4-6
8 p0 q5 N. c! Q! D) t8 \) g
; ]3 Z9 S! W" |& I4 e$ GThen Weight the Third5 T1 b, A* O/ Z; i9 q
3.8 g8 S4 O) M. {! P
- J" M6 P5 h7 x, O# i
Suppose 4-6 > 1-3
1 N' X$ J0 q0 D/ f. ]
0 C/ c/ [% E/ C3 Y0 Q7 X9 _: qJust like the first Step
: C6 H- c- K* P5 q0 M, A
3 p, j# h- j5 d' l4 N8 b4 vs 5 : C( |, J6 z/ D1 U$ b4 @- |
  z( S" w3 h5 L) d
if 4=5 6 is the fake one
  z4 ~) r  G. f1 s1 R
% A" Z0 Z  V8 Xif 4>5  4 is the fake one
: }( l6 a7 ^6 Q2 ^! s# c
$ a2 X8 Z" A3 y  f% t2 Xand so on......................

hello1997

分3組4隻波子秤
% m8 ~' s1 O: v2 }( C: u! ?6 b0 N) e+ p) Z( D/ M
Group A: 1,2,3,4
) w: ^  Y8 ?! j0 @7 cGroup B: 5,6,7,8  E  C8 B( E* Q  h
Group C: 9,10,11,12( k1 B- H+ A& N7 d
Group D: 13
0 s& w2 {1 C3 _! q! L6 a. r3 N
' I& O% k5 ^1 P: w+ ^+ `Round 15 I, i% N/ Z) C4 r; \: u0 l0 R  }6 d5 a+ V
Group A vs Group B
  X; S1 P8 L+ k3 @如A and B一樣, 即較輕一粒在Group C or D4 t# R9 a* |. A+ ^
. }; M0 p+ U. Q: X$ G- d; ?
Round 21 G8 s1 _9 Q. N0 \2 B) r; g
再在Group C拆成:
$ }1 L( o0 i, [$ }0 i# ?4 SGroup Ca: 9,10* ?# {: W- n* \0 {9 D, X* {0 D
Group Cb: 11,12
: C+ W) o/ c; E1 p5 U; l6 t8 y8 l$ I5 ~然後再秤, 如一樣, 即13為較輕一粒.
6 ^7 @1 v2 \7 j* [' `1 n: i& m9 @  ]! J( O( P. ?: r
如不同, 即較輕一組有一粒較輕波子在其中,
7 I5 k1 L1 z( \2 G) a* q要再秤, Round 3, 之後便知答案.
4 h$ @1 M0 H# ~2 A/ q" z3 _
9 U& L) Y: V" t7 N' Ke.g. #1 假設10為較輕的一粒, }3 e: `. B% r. ?6 c1 V
Round 1: ~/ R2 q! h) k# @" V& ?# r$ H
1,2,3,4 vs 5,6,7,8 = equal  w) ^& |; o: P' H" Q( G* s9 ^
5 f/ Y6 q" h0 R/ _* h1 i4 {
Round 2  x& @* F$ i, _5 \* C+ `
9,10 vs 11,12 = 9,10 < 11,12
+ s. j. Y/ p% q6 v# |" I. r& r# E+ X% S5 ?+ a4 F
Round 3# d$ z, t7 \8 J8 I
9 vs 10 = 9 > 102 e( n- c0 C: P
2 Y: S" B2 q5 @; Y7 V/ f
The answer is 10.& z2 \) v0 k$ ]: g

( `1 p5 b% C" [e.g. #2 假設7為較輕的一粒
" R/ q4 `9 D) \5 n. C7 \+ v( vRound 1: W' C' e; D/ t* s3 @! X
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
. X+ d9 |+ f0 T7 x! H+ c  x4 E+ J+ u: B, ^  s9 z
Round 2/ t2 b( n6 K7 Z4 {- D6 K4 j- G
5,6 vs 7,8 = 5,6 > 7,8
) N, `& u, ^( U6 [6 i$ r
! o) R/ l' {, h# M8 G7 o" \' @; G; tRound 3$ w' G* j( b, O: U- k6 F* ^
7 vs 8 = 7 < 81 |! L+ r" X8 x; M, t
2 s! r0 c3 z, D; _! ^
The answer is 7.: `" J  i- q1 H
$ w5 a3 F8 c  f9 q# T9 z' u
e.g. #3 假設13為較輕的一粒6 W" D& I1 O! l7 f! z
Round 1
- b, \- m8 }+ s1,2,3,4 vs 5,6,7,8 = equal% L3 h( c3 Z7 s$ q) ~5 k

/ E0 z- |- `. h; @5 g: ]Round 2) J. g/ Z; l* k* |
9,10 vs 11,12 = equal, j9 `( |4 T( l% }. I% v; x; f" Q
7 O! h: ]" }+ O. c9 s
No Round 3
+ [% a3 V: P, S3 q$ C" R* ~1 u
! S0 Q1 \" j6 x& G# H7 QThe answer is 13.$ E3 c% V# Y8 D! T# C$ W4 l$ j. v- N
& P/ Z5 [- I/ @. F+ a) Q
唔知我答得正唔正確呢?!
6 L) u0 ^6 s7 P* l  @; [( H
9 i2 F* r. E$ q/ L& D1 L9 |6 M[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:
: g% n6 l3 {+ D; b+ {; F: _9 H3 u  l5 u1.& D" ~7 K/ P* u/ }9 n# U) w, `' `, y
1-6 vs 7-12
) F  E1 r1 A. z. e$ a' C3 I$ tif 1-6 = 7-12     13 is fake: G7 D8 U2 n! O6 O
! J9 A2 ?. L; l' d5 a
if not
, j$ L. V/ X* O0 P# F; p: q, w  c" }( {. g$ L: m7 [6 V% J
Weight the 2 time + G: p1 I8 C$ X# h* V5 A7 X$ w

/ c3 n! l0 V. f% Y" T! @7 ESuppose 1-6> 7-12' f) D6 X8 T: r- P

, w0 z. ^3 r& k1-3 vs 4-6 + l0 C( [, w# ?7 A4 P  w! l

, d' I9 c2 K% l) vThen Weight the Third7 K, K4 C* o! j
3.$ x7 c4 w* |; ~. x& v
3 J" Q5 A6 e1 b+ n% T# S# L! p
Suppose 4-6 > 1-38 S% X3 i0 S1 l' r/ e/ E

; ]6 O% J) x7 ~1 R9 H8 qJust like the first Step: n& B' I0 t$ I, c- p3 g: m+ X

& u) u, j* j- p0 q4 vs 5
9 E" L% s3 s# a$ ~  |
8 R/ W6 B$ J. b/ N' U9 a) k9 p* _if 4=5 6 is the fake one
. v+ {, ~- f$ R( [, z0 B% M& L! v/ n& X
& r& A5 i8 p/ a1 x) Fif 4>5  4 is the fake one " ?1 {/ k0 V; q  z& y, M) Z  J8 d
and so on......................

* e0 L, _# P% p, W' O1 l3 ^2 |8 c+ Q+ \0 h
! e+ ?3 B* W% M. y1 I8 K- [: q
0 r  w/ |$ Z- L$ t, t0 o# t問題第二步
; X6 i2 T0 E4 r( u$ }6 V' R
& _- a; l4 `* G/ kWeight 1:  1-6> 7-128 O; r! N# t% I! c9 F
# u, \- I  p; t( S' @# {/ }
Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6! B* V- T8 p% v7 {0 @/ N+ i7 q
9 `/ }' c% j, k+ `. d
你第三步点去搵 7-12 边一粒???2 y$ L4 }+ m. c# f/ g# u

0 }6 D. P, m- \4 a- m) v========================================
8 Q8 g$ T! }0 Q2 ~3 U
" ?( z9 B+ A3 Q. o! Z( L2 {2 w問題第三步/ V0 h- E' D0 H7 c& X3 A1 v
/ E  r" j1 Z& z: n- c
Weight 1:  1-6> 7-128 c- _( O7 O' \5 {

- u# v5 n0 ]( t' x$ n4 x0 i3 |8 aWeight 2:  4-6 > 1-3
9 K& k4 C7 K' I" k9 A. C: j' R3 W2 g- l9 P/ Y4 K# t: Y( d: i
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