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
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9 K6 S# R* X0 N0 F, c- g+ A『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)。  ?6 f- b4 y' b5 [( S$ e5 X
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- A$ W8 O) K. R! I
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注意: 5 N2 @  B& G. ~$ P8 C

+ M; ]7 Y: N1 o* ]7 B5 G1. 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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  U, m1 ~4 i3 Y9 w/ C9 P% Z2. 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) ]7 i' l0 c$ l
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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( V3 D! b1 D+ P9 P/ X. ]: U
相信e條題目都有吾少人玩...

: w& u$ E: L; O$ a7 }我以前畫左個chart去答,
. m, c* m1 m* Z4 l; E& E等我搵下仲在吾在7 v0 P$ I) y# \" q% _

) J0 [0 V8 _! n* @$ v- z" y當日用左37分鐘答１２粒波子，差７分鐘才合格。
( h; J* i4 ~3 g& r+ v) Q! k13.........2 ~7 }6 F8 g! g, I$ E8 \+ {# h

& I6 ]3 o- K5 z- i. p[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:" e3 z+ U, C& M* a( g/ J7 X

8 c$ Y  g1 Z* b$ l我以前畫左個chart去答,
; K5 j5 j; G: x9 e1 w等我搵下...

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8 {# ?0 L& i# f9 o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:0 a% d" w( ~. t0 `' b% ?0 J# W
唔識隱藏...已經諗到..

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, _* H+ r. r; V, S% Y6 I2 N6 Zsor !!!....e加改左
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  j+ Z! A7 y$ J0 F3 r- D# k5 l2. 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, ~; K( o; y( R& p6 {
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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
. V, ^. t* d4 J相信e條題目都有吾少人玩...

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" \* Y( Z" f8 T' ?3 n! mPlayPlay, Let me know later who has the right answer and I will add points accordingly.( c) R- Y8 [0 `" X% k
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:7 W' ?( S" M. o" c0 ~  D

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5 B  \1 B% S" b# _0 dPlayPlay, Let me know later who has the right answer and I will add points accordingly.& _- ]3 H& N; [
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Thanks

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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

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1-6 vs 7-12
" U% {6 u5 ^9 r% E) J( h- |0 Lif 1-6 = 7-12     13 is fake( l" K; Y5 {5 z2 V3 S. [0 f
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if not ) c8 t; x' K8 @& ?+ y

$ P% e* G/ ]8 J" x8 f5 ]$ C% S1 lWeight the 2 time 4 i9 |9 @5 H0 m* X6 H

9 X# K8 M7 g/ J. x# hSuppose 1-6> 7-12
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1-3 vs 4-6
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. ^2 ?5 F% H# ?5 D0 H; b' S. I1 OThen Weight the Third" L5 y% Z, k! }/ o" _
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Suppose 4-6 > 1-3( x) V7 y- r% o0 Q6 g
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Just like the first Step$ b0 R* X3 g- \) P
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4 vs 5
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) W# v- v& J( ]if 4=5 6 is the fake one
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if 4>5  4 is the fake one ( s! U8 f3 @$ t/ a3 `

( Y* \0 E& z4 h; w( T% L' iand so on......................

hello1997

分3組4隻波子秤* s" m8 r3 r  \- E) {+ W) ]+ m
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Group A: 1,2,3,4
& U# y" f5 ?, n$ S3 y; AGroup B: 5,6,7,8
1 b/ p4 h( D; l1 iGroup C: 9,10,11,12+ b, L! Z% F/ C% v
Group D: 132 s+ l  S& z/ l6 H; K

, {( Y, Y' \5 ]; }/ p  |% {# j# y: n5 XRound 1. A6 g/ N9 B+ l
Group A vs Group B
8 G. [0 H* U9 D如A and B一樣, 即較輕一粒在Group C or D
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# D" W6 o" D. `Round 27 A- }$ x8 i+ i: k
再在Group C拆成:
9 h1 Z( W9 ]* x: m0 PGroup Ca: 9,10
2 C& U, t0 c8 J8 SGroup Cb: 11,12
% B! o* T" ?+ O; q* \3 `然後再秤, 如一樣, 即13為較輕一粒.
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- M( F* ^: C+ p" Q9 s4 |9 X如不同, 即較輕一組有一粒較輕波子在其中,
  C# a3 |. o  t5 Z, e, j' F. s要再秤, Round 3, 之後便知答案.0 I4 B. S6 s/ i5 R+ ?* W( L- a

: \) E! a- C3 i8 c! ~6 ?# d4 we.g. #1 假設10為較輕的一粒4 X# s7 s- O* T5 j" |5 V# q) R
Round 11 k0 }- X! X" j# g6 H' J0 {, H) z$ L
1,2,3,4 vs 5,6,7,8 = equal
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" {+ ]+ ]4 ?& W6 C( ?: Z5 CRound 27 L# z; ?, O: L7 K" f* s
9,10 vs 11,12 = 9,10 < 11,12, ?" {+ T5 [, D' ~

1 r# x% v: r' e8 e* ~Round 3
3 e5 V* ?% q& }9 vs 10 = 9 > 104 p: L) d2 E* }7 }- c1 h) S; C# ?

& `2 n9 X. l. A( J  _The answer is 10.' M1 s. z1 A$ x
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e.g. #2 假設7為較輕的一粒7 W5 T+ |# @* v
Round 1
  ~0 ]7 j! Q, {! N% k1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
, x; V" G# k" f* ?5,6 vs 7,8 = 5,6 > 7,8
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- {' B3 N8 ]9 c0 cRound 3# R5 y* e) V- T/ \3 b9 _$ u
7 vs 8 = 7 < 8
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The answer is 7.
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e.g. #3 假設13為較輕的一粒
% X% E6 o  M& S! x7 P& ERound 14 J9 b! M1 p4 w, }9 z3 {5 R
1,2,3,4 vs 5,6,7,8 = equal
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Round 2  u8 H# X# G" E0 u
9,10 vs 11,12 = equal9 q, U  I  e) l( S: w. \

" L! K' s1 b0 S( T9 `, GNo Round 3
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1 A* N; J" D' n! H% n+ XThe answer is 13.
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, P7 I/ q7 S* t5 t. W6 t0 m唔知我答得正唔正確呢?! ) K# Z  t0 \* l0 R8 U* ]- e
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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:
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' X& Y( x" y" R6 E+ l3 Q1-6 vs 7-12
/ @5 R: p7 h# {% w! p( ]" ^if 1-6 = 7-12     13 is fake
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if not ; i& [4 |3 X* \5 E6 |, h0 M1 l
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Weight the 2 time " U7 f+ Y7 G! f% ]; _

' n" x: X3 ^  a: Y, ^! O8 _+ vSuppose 1-6> 7-12" \5 [3 ^# Q: J' U

3 c! U+ Q: E% s' ?- |% q9 k# i) e7 j1-3 vs 4-6
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Then Weight the Third$ t( ?/ ~+ y8 N0 O$ I
3." x" U* ~3 j) ~5 S( d: f4 W5 X1 x

" x  J& D6 a$ l( E+ M3 Q# D- _6 ^Suppose 4-6 > 1-31 w1 m3 Q6 `6 O  v% \! n/ B) a5 O

. @! ~1 r( Y+ f  sJust like the first Step+ v- {, J! Z  A1 f0 Y: Q' r% w
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4 vs 5 2 h% G2 N/ ?1 O

7 S2 f" d3 ~# _0 _, Tif 4=5 6 is the fake one , W# r' K+ m; k$ P0 ~2 q
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if 4>5  4 is the fake one
3 p! Z, }4 \6 sand so on......................

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問題第二步2 x8 r$ ~" w) g
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Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-64 \4 O0 Q  f& T. n  a

4 q* }' a, W2 n8 M$ a& a你第三步点去搵 7-12 边一粒???' V. E9 U  i, B  b( }* }

/ D5 j; {1 i/ ^$ h========================================
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% \! O  j+ A" _) I# k2 f問題第三步
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Weight 1:  1-6> 7-12
3 ]) [1 ?( p' k
6 `2 S( d2 M4 q# n: S% o4 \! v0 RWeight 2:  4-6 > 1-3
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, p4 g" ~# a6 w) _  k! ?; \& j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