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/ b0 N" v4 U* X; D6 B8 }) I4 W, Q

7 F2 i) t) b0 f% q5 H) T『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 R! u2 ?; p4 r4 _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/ K$ T6 t: a( I& u- U. Z' n) h

# y1 L6 u) i/ ~注意: - Y' o: j0 z1 v1 {! W# M1 h
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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
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6 ~% B; m- N4 @4 q" b+ d, 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  , hide 字要連埋 , 內容 = 答案: O9 Z2 }2 A- _1 C- O9 D' @/ r
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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
! z* n: g7 y) m7 \' X* `) l相信e條題目都有吾少人玩...

' S. J7 U: y1 _" ]" C- M5 X( [% S% v我以前畫左個chart去答,/ j; e1 V0 q! ?
等我搵下仲在吾在! o# U+ q1 H4 L& H

8 K6 R7 r: d; v+ u: z3 Q% L9 B當日用左37分鐘答１２粒波子，差７分鐘才合格。
4 S3 a8 Z8 p7 |& \+ V% Y" x13.........% w* ?4 a& M, O6 m/ p$ G% d

. E" k' m9 h0 L" B' f5 ]7 Y[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:
$ O4 E' O5 ]6 v1 w6 N# V
! y6 i* {+ ~1 Z) b8 V$ C6 J& I我以前畫左個chart去答,
4 ^7 s( X7 w# z* X0 S/ h1 h等我搵下...

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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:% _! G, m. d2 V: z
唔識隱藏...已經諗到..

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sor !!!....e加改左6 K* y$ Q% T6 p% D$ M4 R) ?

0 C5 z4 R3 O9 `+ {% j2 i7 V1 `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
1 B3 ?: J: C- l, _0 v$ D7 t& s6 l8 L1 H4 y; ~# x) [
[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
: X6 U8 {  S# h# n" H2 w7 W0 E- u相信e條題目都有吾少人玩...

9 o; c+ x: K8 s0 ~+ C! \& f" ~3 W: _& W" d8 P+ n! ?
PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:$ C5 C! R' |4 u
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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  N3 X4 R6 I9 l+ E( v4 ~; X3 s' nThanks

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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.7 L" e- ^5 ^1 L( A( Q/ z4 P
1-6 vs 7-12
9 L' L: E7 E( S9 Z( ~9 n4 j7 Yif 1-6 = 7-12     13 is fake
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) C# p6 g1 l6 G5 d, \3 t7 P- F1 wif not
  z* b1 P/ R2 O" [% E3 o
& i6 \, ~. l# i8 sWeight the 2 time 9 e1 x# O: @3 @# U9 N

4 M) @4 x1 |0 ?1 pSuppose 1-6> 7-12$ t/ m$ X  I, ?, V0 z+ N8 K
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1-3 vs 4-6
+ @/ W. G; |. s: B: b8 H# W% e0 C9 [
Then Weight the Third, Z2 }/ n0 A# E
3.1 \; y$ Y- H" H4 x4 J$ \; i
! [9 [; a3 x- S) r
Suppose 4-6 > 1-3
0 ]2 z7 H1 w( K+ K
: A* _5 i" z4 o/ ^2 m7 k5 ^Just like the first Step% k2 W$ ^! S/ t% m

' Z0 e+ c6 ~8 H; ~) D9 y" o+ S. ~* {4 vs 5
( D* R1 k. r- [8 [; v* Y1 F/ p5 x* i9 _& w+ e* d% D7 k
if 4=5 6 is the fake one , ^; _# N' g6 I# j9 E$ R

& c8 ]8 H" ?8 C  \0 S9 Oif 4>5  4 is the fake one 6 q/ h7 Q  a/ n9 j/ ]' ?
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and so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4% q1 q# J4 u4 T) R0 l+ S/ L0 B
Group B: 5,6,7,8
" ~' `/ n, {6 C! }/ |* o1 [; ]Group C: 9,10,11,12
9 T% p+ |( S. w0 h: C1 F  T( zGroup D: 13+ s# F2 ~$ j  a6 ?- [
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Round 1$ y! R' d& q, A
Group A vs Group B6 T+ ^: `/ r0 K# H) O+ a# T) }5 h
如A and B一樣, 即較輕一粒在Group C or D
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Round 2
( a2 D( E1 [' Y4 d- r! l0 W/ [7 K再在Group C拆成:$ G' P/ X! M* P" @/ J3 _3 L
Group Ca: 9,109 Z9 X  K* H& X& m
Group Cb: 11,12
" a1 I+ H$ s2 r. Q. G然後再秤, 如一樣, 即13為較輕一粒.
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8 m/ }; j. @& {8 R1 @如不同, 即較輕一組有一粒較輕波子在其中,
  p0 `" e, q* f3 a! \$ B) S% U要再秤, Round 3, 之後便知答案.
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( J0 u/ G1 \5 n4 h0 o; ^9 t( y  p0 he.g. #1 假設10為較輕的一粒! n1 W9 j2 y. u3 ~" u
Round 1
" R7 ]% m" H1 z! C$ B, U1,2,3,4 vs 5,6,7,8 = equal
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( r0 I9 b" ]' W+ GRound 2
% n0 G0 R. r( S9,10 vs 11,12 = 9,10 < 11,12
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Round 3
- C( n5 x  A, d( [7 [9 l- O% W5 N4 K9 vs 10 = 9 > 10$ y7 R: t1 l9 [3 B4 N, p% k# u( `
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The answer is 10.: f( a* J/ L2 ^0 D& F  W

/ J+ N: A" ]% u7 C. ke.g. #2 假設7為較輕的一粒
: ~1 n8 m8 E' Y; h# E, y1 CRound 1
  p, `0 l8 U' ?& X1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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% P3 Z" t8 L0 fRound 2
/ r$ v8 R4 H) T5,6 vs 7,8 = 5,6 > 7,8
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Round 3( g; l1 c2 b! J& w  @3 }' n
7 vs 8 = 7 < 83 G) T! q! ^; B- P- R! R
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The answer is 7.
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e.g. #3 假設13為較輕的一粒4 U6 Y7 A2 Z8 ~+ F1 L6 `5 E
Round 1' z4 v  g% L7 q; f: s
1,2,3,4 vs 5,6,7,8 = equal7 |$ }; ^3 A4 B# v( k8 V  Q
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Round 2
- r0 X! V" V9 d- L/ i5 {3 y: @9,10 vs 11,12 = equal, G. [. G) {0 }* R4 y& b2 P. J

6 V# S' Y4 `/ nNo Round 3% j4 D8 b0 h, \& {
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The answer is 13.
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9 z1 ]0 Z% D0 K6 H8 j& [7 C5 X唔知我答得正唔正確呢?!
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[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:
+ ~6 F! P$ z# S6 W- J1.. o* z( Z& `" c6 F% n
1-6 vs 7-12
5 Z/ w# {; e& {; q: Vif 1-6 = 7-12     13 is fake
3 e4 q2 I- ]; P4 r- g% Z9 Y& Q( r3 W
if not
  c$ H4 R8 x  ~) ?* d; m( \2 O6 v$ N  f8 H9 a/ Q  p% D  ~
Weight the 2 time
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8 |8 n) [' O+ J1 f2 A7 a3 lSuppose 1-6> 7-12: |' N9 Z4 l& Q% T; B
# c7 I2 Z8 \0 Y5 u$ d3 L
1-3 vs 4-6
3 T: t8 {9 r+ P# t$ N# W4 N8 Z- L- K$ b* M
Then Weight the Third6 ^& ]# m+ m  O- r  o" }" E
3.
+ c; h0 N: a& B& |' ^- V1 B" Q3 }) K! z
Suppose 4-6 > 1-3, P7 [6 Y8 n, H" I' a8 ?

. l  G, w( k- t! r- y+ A6 E  {Just like the first Step7 t) [( f' [8 k" L2 h; c

, |3 i# ~+ _; o: j" f4 vs 5
& K4 g- [0 {0 s' l& M
' A  \: y9 M: P2 Iif 4=5 6 is the fake one
, U; B: D( G' n/ B6 D
& K, h* @  z! Y0 Q2 o7 nif 4>5  4 is the fake one ( g/ m" }5 h0 q: {
and so on......................

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, f3 s; R+ m* q- w$ U, y5 N' ?, H! Y: U! G0 Y3 l7 s) |
問題第二步
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Weight 1:  1-6> 7-12
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. [% ^! B# G( G' d: h, L' EWeight 2:  1-3 vs 4-6 , if 1-3 = 4-60 n, w: }: p) x, s; D+ r, L

$ a$ E. B9 O9 W+ ~你第三步点去搵 7-12 边一粒???
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問題第三步
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Weight 1:  1-6> 7-12
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& Z7 P* W! u3 o7 }( h4 b9 `Weight 2:  4-6 > 1-3
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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