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" T  i' z( q) Q6 b% G$ F

8 \* f; p* F6 D! J8 r『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)。
+ m5 ]* k' l% ]# J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？』
% ?8 c3 R: r8 f- i  E' K6 M
, b& H2 g4 n0 c) Y% d注意:
) L6 y# P7 Z5 l+ F" k) i( W$ @# Q# @
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9 L# c$ {0 N8 l4 y; q: H% `' A: j

) g! T% f: O! a, 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
5 }' v+ U9 p: H% R1 L+ P
! h# ~5 g. Y: p6 z[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:; y) a* i9 j0 C) A/ Y* l4 ?
相信e條題目都有吾少人玩...

5 G5 D8 V' @0 o$ O我以前畫左個chart去答,; ]5 l$ U* u  r6 H# K
等我搵下仲在吾在
$ Z+ P& T- Y4 G7 S, C2 K( c: h
% `, b/ m& o, [/ K& _當日用左37分鐘答１２粒波子，差７分鐘才合格。( E8 }3 r7 L* p  }1 ^
13.........& }% K1 h7 y& ^  c, |; N( w

, D! C# {& I3 y! \5 U[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:! _1 Y. M, e0 |- l

( e( E2 ^3 c" r+ A/ q: x我以前畫左個chart去答,
; o( H6 B: w) M等我搵下...

( N/ [. m( _  J1 ^0 W4 d9 L7 g8 M+ m. d' m) z; S) B
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 o0 I/ a9 C# @# J+ {; m% w0 E
唔識隱藏...已經諗到..

& k% Z5 N, {; }) V7 \' t' O4 c

3 x  r3 D4 i7 Bsor !!!....e加改左
; |, }* R. X4 n/ I8 v5 y8 ]4 Y1 |8 U& O  Q9 l
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2 `; U3 }4 E7 r. p' Z

# V" Z9 S) y% w" Z; K6 k[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:, \8 ?5 o8 F" a: U
相信e條題目都有吾少人玩...

: K) a, l# x' P6 Q8 ~
' g4 m) r& V. f  k% V& k, ?) BPlayPlay, Let me know later who has the right answer and I will add points accordingly.
9 ?* @: {  Z" S. _( C7 N: b, Q  v* K0 v8 g
Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
" p# ~' N3 R* G, z' ]; V
( v/ \- X- W) P: e: ~, `0 C3 w
: @& e0 f3 Q( ~! G, cPlayPlay, Let me know later who has the right answer and I will add points accordingly.
' V8 }2 J+ p9 b, p; K! |" v# u( X8 w( [0 R* {& u! L* M3 G  z
Thanks

; @2 Z/ D7 a% e" |* d
* X5 W  i+ N3 @: B% h' Y# Q不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.0 G( q5 N+ }5 b
1-6 vs 7-12. e: `; N9 y' b3 _1 e$ r7 Q
if 1-6 = 7-12     13 is fake
9 H4 ?; M- v2 T) C9 p2 {* K1 \5 k' n2 C1 f6 V; q% w# x
if not
: h" I  v3 s+ v/ E- z# K
/ j" V! q% ?/ X9 r9 z) J* B2 xWeight the 2 time 1 S: e) t- g8 E, M

& C, h9 K! U7 |. V& [, USuppose 1-6> 7-12
; O& Q5 G9 Z- W# o* T
$ q2 Y0 `: w2 k/ }1 |1-3 vs 4-6
  w' D" a7 A- [4 G: j# [' g- w3 s5 L) s- g# }* h1 p% f
Then Weight the Third
; I+ b! E" o6 m* J9 \' \3.
, V( i5 Q: }0 E
! a. d! W' ^+ R' l& ?* f/ iSuppose 4-6 > 1-35 D. I9 S: J! K3 L" a$ n2 A+ t

+ O5 ?" k# v' H5 G' ^Just like the first Step
: |* C) l! g# ]0 {' u
" \( ?- r; ?$ K3 c! L& I  Y4 vs 5
8 l3 [- A. Z  x. d9 N
; {1 |7 z& ]' Gif 4=5 6 is the fake one
- i1 B  B. W4 J2 |! T# e/ ]8 j% U
* x7 B9 Y" ~8 G0 y0 V+ I, {if 4>5  4 is the fake one 3 }+ {& x* s' t  K2 X! y' H! f' [

* i& B% X: q- j' J# Y9 kand so on......................

hello1997

分3組4隻波子秤
! x' ]$ E) X$ a, Q3 D$ g1 s$ @7 ?5 Z6 r* \! I) M4 n7 q
Group A: 1,2,3,4
; d7 E7 ?0 `4 i3 A) WGroup B: 5,6,7,8; A/ K+ Z8 x2 F9 o
Group C: 9,10,11,12
, M6 V1 C/ \& A: NGroup D: 135 U, b: |  N  X7 S+ E! v( N" v/ s
& ]# t5 W5 x* y  ^/ ^! {
Round 1; j* K  L, s" `6 \
Group A vs Group B
6 |9 W8 \& j$ f如A and B一樣, 即較輕一粒在Group C or D  L  A/ Y; E# U; _) P" b1 ]
+ G2 |8 q0 Z8 s! Q- B
Round 2
4 f% O! t$ A9 Y- \: u4 `1 k; Z9 u再在Group C拆成:; }4 B- o8 H1 J+ Q
Group Ca: 9,10
& v# _1 ~" a. O, ?0 {& g" TGroup Cb: 11,12# s  J+ a$ u8 C; o7 D; S
然後再秤, 如一樣, 即13為較輕一粒.# e. o& n: K; A; |3 q

6 m1 i. \8 @5 Z7 G如不同, 即較輕一組有一粒較輕波子在其中, ; f! l9 v% f: i' k2 k: E- l
要再秤, Round 3, 之後便知答案.
/ I5 ^1 U4 T6 }6 A8 t$ e+ x1 Q  V. `" W; h/ G9 Z* a2 b
e.g. #1 假設10為較輕的一粒
; D9 G, Y# _7 y) a  _Round 1* w6 v" p2 p5 y3 `, R
1,2,3,4 vs 5,6,7,8 = equal
2 \7 _) E7 B8 q; w' j0 G+ H: g& l5 I, X+ z5 Q9 u& x# }' L
Round 2
$ a+ q4 H' l! M& Y  W; }9,10 vs 11,12 = 9,10 < 11,12! y& U" O; n7 I+ c1 v
/ P* o$ T, p5 S5 g9 ^2 [, `: q! F5 y
Round 3; ?3 b' i6 }. ?7 U3 }  T. W7 F
9 vs 10 = 9 > 10
" y4 {2 f/ U- j; c7 X! A2 J. W: i# o- ~
The answer is 10.
" s% E& ?) C1 ~7 x: U2 R# A% e' V1 p& h9 M) ^1 v) L, l2 Z
e.g. #2 假設7為較輕的一粒- j) V% X' f- Y; g+ K
Round 15 N5 [% g' F# n( ~3 U7 E) X  z( \
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
6 P7 ^# z  w' T) u
0 e- x6 @3 h: ARound 2- j. U' d& Z) N/ N
5,6 vs 7,8 = 5,6 > 7,8+ h; D' ^6 Y0 g7 r! X+ q0 z1 c8 y

) t; Q* K$ ]  ?* XRound 3
- q9 y# M, {1 U7 U+ K7 vs 8 = 7 < 8
4 n, K$ Q: f- Y+ Z2 I3 B0 B/ i7 @9 n3 @# N1 n' ~4 p
The answer is 7.
# A- }/ @6 }3 i5 n& m' K5 j: k0 G3 q3 E3 `3 R/ b; ^
e.g. #3 假設13為較輕的一粒
6 s1 g% s3 |7 g: c9 w  Y2 }" q& uRound 1
; [6 ^3 \3 R" o1,2,3,4 vs 5,6,7,8 = equal( N( c' H7 R% Q  |( n0 d' t

1 s7 Y5 Z6 `- A/ u  o; o, F0 S& PRound 2# Z6 M. U+ a# [: C0 [* u7 u
9,10 vs 11,12 = equal
# e, [8 M3 A' s+ r
! e# N- a3 f( p1 W% N& j! w  lNo Round 3: r0 x9 q3 }% o. _& w( J9 q
1 F% `  }# \3 V# u  m0 y- Y
The answer is 13.( U0 m  m6 R% B

% `0 `/ E. x6 C1 [) V* Y$ |唔知我答得正唔正確呢?!
2 a& g+ k- V( _# f: M2 p8 ?! q3 }5 w5 f3 K; O- l2 ]; {/ h
[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:2 ?) T. E% ^+ m$ o
1.
6 Q% o3 ]3 S( }$ J0 W1-6 vs 7-12
/ \2 _& T. e8 y$ ~) ~2 _7 Z1 y' Fif 1-6 = 7-12     13 is fake3 A1 {3 i8 @7 W" Z% {) x# w

: Q, z; y) n: {$ _, qif not . R# H& Z( Q5 J9 f1 |. w" L0 c
2 T  w( c5 k6 |5 X
Weight the 2 time
2 h# h6 j) }5 B7 E( u) G- d6 m+ _8 C8 l; s% X8 e  C
Suppose 1-6> 7-12! N" k5 n; A9 J$ H1 u+ I& u5 v0 G/ r
& B$ C5 K! \7 b% w6 K  S. L
1-3 vs 4-6
1 e5 _: D. h  ?; y. R& y
! k4 k2 G. |- C* s0 lThen Weight the Third& ]* Y3 n' M1 g, |+ Y3 i; w9 X4 k
3.
' F1 K" e4 H4 g, S# \$ A4 N3 e5 W
* y& q" I( ]2 |' B& ySuppose 4-6 > 1-3
, C4 b+ _6 a: C
1 X3 e; {  ]$ i2 a" C! @Just like the first Step
6 r3 S  b. C2 W- B9 P8 T# X, r. d" O% ~" b9 F: L, ]
4 vs 5
$ p2 ?3 T6 A% \4 Q% d7 Z( y( E* s9 Z  `1 A( b$ K
if 4=5 6 is the fake one " R$ B: k( \7 |7 V9 _

* }2 u% F& k! p. A( |if 4>5  4 is the fake one
8 V6 q* L9 q) _+ j3 [4 {4 `and so on......................

, ?* T; e  Q, x( N

' D# y. u  T1 W) t" _) t/ b: ?( a) s
" F+ v2 j8 u3 b, b* D. D/ G. s問題第二步( ]& x, y  [! s  @4 n1 Y

% G4 e7 D  z5 b# o( OWeight 1:  1-6> 7-127 [5 a4 V& |$ ^  e
* |) C& h$ |( Q6 _
Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6" `( K& b' l* ^: [" p* q1 ]: k
; u( B/ h4 q2 A6 w1 o+ ?
你第三步点去搵 7-12 边一粒???
( J$ P0 n) R$ I, Y' A& E) B
) {9 }) E6 i6 F" c$ {8 E, A) Y========================================
" F3 f! G9 @2 L) F9 b$ {) h9 n' Z' D8 ]: |& z% r
問題第三步
9 e8 G7 L1 f9 O' O- Q
! P. q' Q$ k2 A& F5 ]Weight 1:  1-6> 7-126 P" I* A5 R$ B7 `1 I
4 t! Q8 W6 m/ ?
Weight 2:  4-6 > 1-3
' k) X6 j6 `  `2 A5 A" I+ T+ m0 C: d2 s/ H& W  U
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