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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『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)。
* i+ q! N5 S. X2 i8 a# c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？』
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) p3 T( r4 p$ T  r; p  x* |注意: / c0 z4 _0 |6 _9 x3 `
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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3 f+ `8 z( w( E) f" ^- C

( \& @& {% r2 I9 Q2. 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1 W% D$ N6 M5 p1 t7 j5 K
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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:; G  }; h1 Q* J
相信e條題目都有吾少人玩...

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我以前畫左個chart去答," x3 l5 ]4 H- j+ `$ D" \  j& ^* p
等我搵下仲在吾在
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
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9 Z. l6 P. H1 U' S- Z: y  \7 ]3 ?; _[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:" x/ F1 Z( X' N# Z, K( W

/ P5 @; x1 h! q0 a我以前畫左個chart去答,! f% l8 j4 e7 L! y
等我搵下...

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5 v: M5 r1 q* v4 z0 g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:
. z" M+ Z1 ?6 A8 U0 U9 t/ V唔識隱藏...已經諗到..

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sor !!!....e加改左6 Y9 Z% Z! }6 V5 A4 `# |

5 Z( Q. A' k, H+ Q6 h7 `  `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9 U6 C. E2 v5 F" D
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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:8 N3 x8 t8 R, L9 |1 m# V
相信e條題目都有吾少人玩...

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7 u% Z6 c' ^) x& \3 \0 zPlayPlay, Let me know later who has the right answer and I will add points accordingly.( ~5 _5 |& f% u; W' j! N

  f8 J+ K$ I  kThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:, T2 m/ d, m4 U% `% W* b
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$ W, O) R+ \. b% lPlayPlay, Let me know later who has the right answer and I will add points accordingly.4 c6 B3 s6 Z' T5 w
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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; C# m: i9 a0 |' H  a, X
if 1-6 = 7-12     13 is fake2 n  Q* q; z0 e* ?( ?$ f
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if not
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Weight the 2 time
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' z  E0 `$ O" ySuppose 1-6> 7-12
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1-3 vs 4-6
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9 _5 [9 g0 W$ H. s( M: ~- n9 |  I* RThen Weight the Third
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Suppose 4-6 > 1-39 X0 Y- z+ ]4 c% x2 I5 U

* O# P! r" {% z9 r1 X3 c. ^Just like the first Step
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, w- j1 G& @# ?2 Q4 e- j4 vs 5
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# d0 e% Q6 j, P" K! w8 Yif 4=5 6 is the fake one 3 u' S( V9 H4 B2 X8 s% V
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if 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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2 y( B' V, Z. `+ E7 D; VGroup A: 1,2,3,4
# C; T, u9 A, L0 sGroup B: 5,6,7,8
) j+ F0 z3 X0 v/ @' G, AGroup C: 9,10,11,12
" d7 ^4 [, m( l8 o6 Q' ?5 qGroup D: 13: b! R0 ~3 U/ `! ]. o6 A. d4 ?+ g
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Round 1
' l' v8 E( N9 d7 v0 WGroup A vs Group B
0 ]+ F8 b. N$ r+ i, b9 L5 N如A and B一樣, 即較輕一粒在Group C or D
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Round 2. k% b& e) R$ Z; R# P/ U9 w1 d, W2 Q
再在Group C拆成:
- Y/ L! p+ @$ Z+ i1 u$ jGroup Ca: 9,10' r; {& z. u$ ~+ x. T' W6 V
Group Cb: 11,12
3 S0 f( e# f) j; w* m5 `然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中,
- {2 M* f, A" l要再秤, Round 3, 之後便知答案.) Y- R8 q  Y3 t

0 p4 V# a4 j4 L; @+ B  P( A3 he.g. #1 假設10為較輕的一粒
/ r- ?- w; W: K  h  vRound 13 J3 |" R; ]7 a. |# s$ y/ S
1,2,3,4 vs 5,6,7,8 = equal! s& y, t; W* }9 \

7 e. }' b0 V4 O9 b. D2 mRound 2
) @) N3 ]+ J3 C1 V& {9,10 vs 11,12 = 9,10 < 11,127 W  W1 v# A1 {

' u; O: y$ ?; cRound 3  x1 V# b, s* [1 H) j: D1 T% a
9 vs 10 = 9 > 10
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1 g& A* p0 t8 j; }+ ?The answer is 10.
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% P% Q) e+ d" T" u8 }# Be.g. #2 假設7為較輕的一粒
& u& Q$ S, _& E" O3 fRound 1: T5 \/ _( W, U' ]& _5 m# f  ~
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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! M0 l, O  n' Y7 lRound 2
/ I, Z! M8 a5 o  k, z" ~- _5,6 vs 7,8 = 5,6 > 7,8" N  Y+ M. `* v
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Round 3; o* q1 d# b/ [
7 vs 8 = 7 < 8" N; u, S8 \" V& o5 n

% a/ D1 Q0 u, }. p$ }8 ]The answer is 7.
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! L4 j6 G' L1 re.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal
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Round 2- s/ D4 ^4 x# k; i+ \
9,10 vs 11,12 = equal
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No Round 32 E3 ]5 }) Z0 O$ t2 G# w4 y

$ T) {! v* C' FThe answer is 13.
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唔知我答得正唔正確呢?! 1 U' i( M. P" q6 k$ y& J

% M) g; W% I, `5 P. m( Y- g[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:8 R+ E! N% R/ z5 Y9 N
1.
& H9 E) b: X- j& N9 u1-6 vs 7-12' {5 T" P0 u3 t* q
if 1-6 = 7-12     13 is fake2 f8 j2 O/ o6 ]! q7 j/ Y  a

" m  R1 k$ {! [/ Y( i; R5 G9 xif not
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# O- ^% W3 b* ?3 s3 v5 @) F' ?( GWeight the 2 time - L. s  C2 p! v1 a1 }- s

/ y- n: [- z8 c- |% h3 iSuppose 1-6> 7-12
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, `# _; O7 o* T3 q1 m1-3 vs 4-6 0 J# m* y) e7 l0 p/ g! p  Y4 S

- Z- ]& a9 c. b1 U9 ~Then Weight the Third
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Suppose 4-6 > 1-3
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8 u. b% X/ `7 E1 V; g/ aJust like the first Step7 g2 c, x# F# P# B$ W( k

2 L' F4 M4 o9 v! ]7 _8 }4 vs 5 4 W  ~; v# i1 T
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if 4=5 6 is the fake one " ]' q/ K: v0 `/ W; M

4 A, T0 G8 N- f1 ]* ~/ tif 4>5  4 is the fake one 7 `) d1 l5 D1 |( w0 T7 ~* k
and so on......................

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問題第二步
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5 b& ]; M$ z  [* r' ?$ zWeight 1:  1-6> 7-127 @, b( E1 [+ ~
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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" p1 T0 N! X) G5 g; ^; t; n你第三步点去搵 7-12 边一粒???
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6 d+ R8 W, F: Z& j: _) E========================================" ^; v* k' r2 T- g5 c/ ]) J

$ K6 U- o, ^* @3 ]問題第三步
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, n4 @4 i- u4 ]8 U. f* n& @" YWeight 1:  1-6> 7-124 g  a) ~( ~4 w; T+ s: D* w
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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