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
) k) V3 b# s- ~& P
# M* @* ~3 O- s『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)。
% [2 @% H3 Q/ ^2 y' R( 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？』, ~& m! P* ~5 X1 E7 S& h; u7 z# D# J
+ p/ Y+ R) B* u7 L* S* S% a
注意:
% z+ Y0 c$ o2 _1 x: o3 U( d/ u5 V% H1 V) ]  s/ `# |) U
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 r8 o5 }# Q4 g+ L+ X2 k. a) ?: M
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! P9 S5 J( H: P& S5 C0 ~

( u5 _4 ]: W2 H9 }1 A1 i( y[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
9 R3 p2 I& P) q相信e條題目都有吾少人玩...

- J; k1 ], t$ g, I( d" i我以前畫左個chart去答,# h3 D- y9 W+ \2 v: B  B
等我搵下仲在吾在3 E$ X3 g2 y+ R

1 d3 ~3 I9 i' S* c% J/ t- z/ _當日用左37分鐘答１２粒波子，差７分鐘才合格。
5 `- o. w8 Z$ |13.........6 u- b/ J0 r) Z) _9 L# o+ Q3 ]
4 b; S+ d& j3 b( r2 `  q% t
[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:2 y' D( a2 \3 u9 N5 K: L7 L
% B# b0 d( R" c0 m0 l
我以前畫左個chart去答,
, l+ k: m$ y; f等我搵下...

, S, i$ r  M# y0 p  `) B$ S4 i1 f5 r( z4 X3 R7 S. p) T; Z: l
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:
2 g% q/ D9 y/ Y  W* X唔識隱藏...已經諗到..

' B& j  ~: `7 I8 B6 l& }3 _
2 `: h2 Q7 ~4 o5 z9 Csor !!!....e加改左" g* h) ]/ t' r

9 _" A0 q5 |" S& m2. 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
! ?/ P6 u+ e9 v6 k  x( _
. S3 s$ T* c, 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:
+ d# M# q9 J0 z9 ^& F相信e條題目都有吾少人玩...

- V8 A4 l2 L" I! ^% s+ I- C0 B3 p6 S6 ?
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
) p8 _4 ^0 U  k) P( F
1 n9 F0 A+ G( A# x! b6 lThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:* E4 M: a- A" Y% S' y- c4 A( t

) ]. q# R4 Q6 i( A+ U+ f+ n5 H! K$ j2 o
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
  `8 ^, X- B( n8 i; ^
0 L2 b; ]) j7 H9 DThanks

7 e0 n# y4 B6 K/ `/ k2 p1 a9 m" E7 W* r+ ^
不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.8 m. P9 s: k# h" P
1-6 vs 7-12
& j, \& I+ {# \/ S( z! j1 z3 R/ nif 1-6 = 7-12     13 is fake8 d+ r* Y2 U& ], f

# t- d) T% [! ^, pif not 5 c, O3 P4 \* F  l" i. n6 Y

, n  c! J' Y) |. YWeight the 2 time % L5 H6 q2 N  V7 S
+ g2 G# t$ k. s1 G+ d' M( ^9 B+ Z$ c
Suppose 1-6> 7-129 p6 U, O3 g; y2 M% g' a
  n( T! r6 H* w; n1 S( l5 A
1-3 vs 4-6 ' E: X$ {7 P5 A8 I
  `. h  g9 F4 L" Q! Z6 [& z
Then Weight the Third
9 X( K+ K2 ^1 J; t* f3.& @: n6 m- y" o6 E; H$ R4 y

5 A; M" _! [! m6 M' [; kSuppose 4-6 > 1-3$ }" q% O6 _& l

& ]% s2 h8 g0 d* z1 hJust like the first Step8 A1 l4 O  G+ f4 k

+ }! i+ L' L2 I4 vs 5 0 Q5 _4 M& z# s8 Y% y
7 P( n. _- ?& k5 @/ p
if 4=5 6 is the fake one
6 d, H' g+ c1 z( ]! B* D% D
+ g6 b0 d# o! j% \if 4>5  4 is the fake one
* {& \" v' g- p6 I% X) T/ N, |/ l) v5 G& l* j/ W0 N- f
and so on......................

hello1997

分3組4隻波子秤0 v7 T8 c' T: I9 t2 ]6 t0 e
8 m- x1 A/ o5 I% L0 Y- F) Z1 H
Group A: 1,2,3,4- @, Y2 f2 O. b" P3 E5 x' L+ u
Group B: 5,6,7,8. w2 K# d( I- o$ I, g+ |
Group C: 9,10,11,12
; A( q# N+ _1 ?  N' W9 J! _% {Group D: 13' N+ V9 h. h* a1 |* U

* J' w5 y, D1 E* \! o% ], aRound 11 j' K0 o  H: E( t' e! Y; A2 u
Group A vs Group B
) x! L# u- S; f- g7 g如A and B一樣, 即較輕一粒在Group C or D" S% ^' q. N7 L$ A
8 W4 c/ A4 h2 p; ^0 \
Round 2
3 j1 k7 Y( u4 t: V再在Group C拆成:
" O# T3 T" Z% I6 x/ qGroup Ca: 9,10  ?% v, }# N( \1 U3 F
Group Cb: 11,12
& r# v8 n5 {) T7 m. E然後再秤, 如一樣, 即13為較輕一粒." N  {7 l! `. ^6 Y/ c5 V. q
/ _/ K3 R! z; k. }: N, o1 W2 `* y7 K
如不同, 即較輕一組有一粒較輕波子在其中, & g! \. O( D$ P  I$ G: D. f/ p
要再秤, Round 3, 之後便知答案.
8 E9 S% Z8 L  l- e2 i2 ]; S" ^2 R! C! r% P- @8 j. _
e.g. #1 假設10為較輕的一粒
( _& I# i; q3 G9 x' o5 y, ?Round 1
/ S; _) e" ^" W0 J1,2,3,4 vs 5,6,7,8 = equal' ]" P+ i) m, U* G5 @& K

8 p- C2 `7 A  V) Y: jRound 25 \! I6 J6 n9 @' _8 M* `2 g
9,10 vs 11,12 = 9,10 < 11,123 _$ ]: d. m8 Z- W1 O! a
0 U3 B! k. @8 `& k3 ?* Z4 Y
Round 3
0 R5 f; G' P# Y1 V# ~  ~9 vs 10 = 9 > 10" N% {& Y% i& _8 g! |2 x

5 V  n6 I1 E( h5 B* AThe answer is 10.
6 ]$ p0 U. n$ N9 x7 \, k+ `" Q: m
+ l8 ^2 b, }' J: _3 C+ ze.g. #2 假設7為較輕的一粒
5 A5 u% M# D# P4 {5 W. c+ r# MRound 1
$ G0 G( ?1 u# M1 ~7 S- j# s1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
) ^6 n" O( ]9 `6 k. f3 v( M
7 Y& o3 B$ E1 ?& j; r4 G" eRound 2
! @" G, V: q! C* F: ~* K, p5 l5,6 vs 7,8 = 5,6 > 7,8
' I# I4 [' f3 f$ N2 A8 V' y5 a( D# D/ Y/ ~
Round 37 }, G1 g% `8 K8 l
7 vs 8 = 7 < 8
. q* x; w9 f1 p8 W! U. Z6 K7 d7 w+ ~
The answer is 7.
2 @$ N1 A  w8 h. Y0 q1 K
$ H9 V5 f* {, K* N7 t4 Ze.g. #3 假設13為較輕的一粒
/ S4 Z9 @2 x1 _4 g( W7 z$ WRound 1
! X8 p9 Y5 a; d" I& A- C1,2,3,4 vs 5,6,7,8 = equal* ~! K5 y% \' B; w5 l

8 g4 g7 |. B* C5 ~0 yRound 2
/ }6 t4 s3 H6 \1 `: d1 o9,10 vs 11,12 = equal
" U  n% R( L% V% y4 F8 x/ X* I3 Q
9 r% [: B8 j( _! ~1 N/ w2 ?+ KNo Round 3% U2 C( v5 ^; f5 S* j/ R& g
( w- a/ p) @" ^8 v
The answer is 13.
1 J8 w' X/ n% P4 j+ |' e4 E
/ s; ?0 D% l5 D- }, R1 K" h/ m唔知我答得正唔正確呢?! # `7 \1 s; y3 }/ D$ v7 s, |
) o9 s( s: b# i6 }( d' {: @
[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:. t7 ?. R" c/ J: f
1." F; \! m* W% E" t" A1 v( [& m
1-6 vs 7-120 q9 d1 c8 y+ {+ @! e$ V' Q
if 1-6 = 7-12     13 is fake
) r( A/ U' j0 Y
" N1 q2 @% C4 w( g5 kif not - p* v3 X% u. e3 ^4 q

% f3 N- l7 m! N! A0 o' F& w, HWeight the 2 time 3 b# K8 T; {2 f+ u

4 q. @+ }2 M& V  d  |2 _Suppose 1-6> 7-12/ N# V0 {  ?* ^' \
# n4 d  F# {/ u+ J5 B
1-3 vs 4-6
. ?, I1 [- ~  Q$ P9 B
& J$ c& k5 i# J' F. o8 q: pThen Weight the Third6 k5 t9 v5 f( v9 G
3.
2 C4 X. @0 O8 K% h
4 W' \$ ]/ e+ S8 sSuppose 4-6 > 1-32 A: N/ ~& @; r; }! u0 r
0 [; N) e$ h% Y8 C
Just like the first Step, _6 W( s/ [# f; ?0 a5 C4 d# [
& R+ O5 }9 N0 e2 j8 @7 }8 D
4 vs 5
( R# I9 `0 O& {$ g/ \. w9 h. J9 m  Z
* J* {9 [5 Y$ U1 N# T9 Fif 4=5 6 is the fake one $ q9 ?) f4 n3 K- R

1 B" r( w: S# q8 m! I2 rif 4>5  4 is the fake one 2 o/ h: e, S0 W( R6 H
and so on......................

- R/ r) O$ O8 J$ F, u8 E" c& G  o

. O* f% X2 `! t) _) O' d1 f9 S" d) S' ?5 d# V/ r+ S
問題第二步
, z; u# b1 e0 s$ }8 U' m' A
5 q" R% }8 J' ?# GWeight 1:  1-6> 7-12
2 D+ u" L, L" f' L3 `
8 R5 h. Y+ {  Y8 N) zWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
* T7 l8 C# h/ \) {- E$ x$ [: A  Q, M, J2 b! {3 U) f
你第三步点去搵 7-12 边一粒???
! ?) r" M0 Q# W/ {) |- t$ {0 `; U" j4 ]7 [
========================================0 `- P& L5 e& C3 X& H- J

4 A4 l6 w4 l; _. l問題第三步
& t8 V' j/ h& m+ f, b$ m- e/ f  k' w# O# M8 n3 s7 J. J" l% a
Weight 1:  1-6> 7-12
/ X5 A: Z# s7 P' O0 u, T6 g! Q; o/ P
Weight 2:  4-6 > 1-3
1 z- y+ e+ i) R" M. c6 w0 x1 N4 w6 u; h
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