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5 X/ @7 V2 ?) |2 M) @1 T

! h9 Z' K3 w. w『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)。
" F  V3 ?5 Q8 [, e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？』3 V4 [' j. M. r/ ^& K7 p
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注意: 6 ~6 z5 F& G! A! [$ ^/ @

/ M& p4 O1 x: [- F& k" J# _$ B! a1. 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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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. o% Y' Z- F  T% r, u
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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 21:34:8 V5 q0 V! F& [
相信e條題目都有吾少人玩...

: F( N  k+ w) c我以前畫左個chart去答,
/ O$ ^) F$ D/ `; [5 j等我搵下仲在吾在9 j4 J& w! I/ C) f  H

( x  y3 v- A" K) M3 k* Y# ?7 h8 D當日用左37分鐘答１２粒波子，差７分鐘才合格。8 e7 ^4 S; N2 O" E0 n
13.........
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[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:. U2 p( x8 j9 {' g- U9 m
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我以前畫左個chart去答,
6 W( @% ?1 q6 e等我搵下...

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* [3 z9 C: b0 J) X. T$ z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:
* B( A* N4 Y" G( Q. [唔識隱藏...已經諗到..

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" H! g# \% u; `+ @* Dsor !!!....e加改左7 r% x+ g( {( V' `' u/ T9 q
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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+ o; P1 B4 }, {: ~
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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:
$ N2 Y, a% f0 Q% r: t. z相信e條題目都有吾少人玩...

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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4 b# ?; `: g2 R/ N6 CThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:& N. E- h; C* c: B

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  x3 p1 [/ B; V6 {9 Y+ l0 I  oPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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. o# V, Y- N4 y$ KThanks

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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.
( i  c# U4 w" n1 S: ~" S1-6 vs 7-12
1 ]- C) p) [' u6 j: ?if 1-6 = 7-12     13 is fake! t2 X4 S& y7 g
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if not
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; h+ D* _6 V6 F7 E- ]% Z1 c& jWeight the 2 time
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6 {6 b4 @8 W7 l: `Suppose 1-6> 7-12
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1-3 vs 4-6 * n# c& ]. X( h2 Y9 l

' `4 ~2 K3 u# t, h/ eThen Weight the Third
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Suppose 4-6 > 1-3
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Just like the first Step
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; K" N; m7 R) s) \3 H4 vs 5 " q  Y( X9 a9 d  z0 R

$ J: P0 G5 b) R9 R$ v0 I! p8 eif 4=5 6 is the fake one
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' z/ n6 s1 A5 [4 O/ g, ~2 Q" j9 Fif 4>5  4 is the fake one 7 Q) Y( U" _" B
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and so on......................

hello1997

分3組4隻波子秤& [& F, A+ O: j5 F0 L7 t
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Group A: 1,2,3,4
" a5 E4 A  i. M. B2 lGroup B: 5,6,7,8& j7 R( H- ~* Q8 D6 \, c+ q
Group C: 9,10,11,12( @. I( p, r7 p  v  L' h, d
Group D: 13
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9 `' m8 e1 u% v0 k, H1 F) `+ FRound 1
/ i0 M% y1 p* XGroup A vs Group B
9 s8 r2 a# [2 `) M7 E+ f1 p如A and B一樣, 即較輕一粒在Group C or D! p" W+ j. {4 g& B

3 H% q+ l* C5 jRound 2! s% G9 L8 j% N9 I( @# T8 O0 Y, ?
再在Group C拆成:/ J! _: \0 K7 U- k- {+ \$ H6 W* Z
Group Ca: 9,103 T8 c4 m2 O* V2 _7 O' q
Group Cb: 11,12
( f, F  d, l2 ^4 O/ n/ @然後再秤, 如一樣, 即13為較輕一粒." y7 p" t0 d2 k+ E% m% [
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如不同, 即較輕一組有一粒較輕波子在其中,
- D7 H1 x3 g3 |( _要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒' O3 I2 n7 _# F; C) w# O$ S
Round 1
  e* O# |" J+ t0 N4 m* d1,2,3,4 vs 5,6,7,8 = equal. ?( M, i8 R" v) {
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Round 2
3 {) _0 u) [3 v/ f+ \9,10 vs 11,12 = 9,10 < 11,12. N7 \( t  x" e. b% }( p

+ Y% Z" W" Q: k7 yRound 3
* F3 ?# J& s0 Y4 ?9 vs 10 = 9 > 10
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The answer is 10.
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6 \8 Q, U. U8 g) b( Te.g. #2 假設7為較輕的一粒
  s- ]' ]# O3 k; s2 lRound 1
' m. O; Z/ j5 R! U$ I6 b6 O1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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& B/ Q+ e4 ^. zRound 2
& p* J" n! _- v, @* z5,6 vs 7,8 = 5,6 > 7,8
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7 M( [" \( l- m8 z7 A4 YRound 3
7 j6 v4 k& {* b0 G) d5 A% _( |7 vs 8 = 7 < 8
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The answer is 7.! B6 B! G) ^, i7 |

8 N: s7 N3 {& f" Ue.g. #3 假設13為較輕的一粒
) Y. g4 t8 c' n$ s+ tRound 19 a+ u0 o, p0 G7 ~4 k
1,2,3,4 vs 5,6,7,8 = equal
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4 y9 X5 W( x# m" ^( p  C8 \Round 20 j$ ^3 Z% p( o* \( Y: p
9,10 vs 11,12 = equal) u: P' A" C) P: g. Z, R
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No Round 3
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; q% G3 A1 \# i  uThe answer is 13.
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) o. m9 Q  Y% n9 U唔知我答得正唔正確呢?!
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' l& `5 L7 m9 ~8 ]. Z) I4 t[ 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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1-6 vs 7-129 q# \) G- J( H7 m6 I( }+ @. \
if 1-6 = 7-12     13 is fake) z# ]" L$ z  b
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if not 9 K) c4 G- k- U5 K3 Q
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Weight the 2 time ) M2 i1 t/ M" q, |( x( z' b5 ?  w

) y5 _' a8 e0 Z0 M$ [- p# M; }Suppose 1-6> 7-125 m: v+ W0 P# f5 U+ ?
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1-3 vs 4-6 0 n3 G8 ~- K' n; a3 \9 `; P3 T  M1 w* K

) t! X7 U. K3 R. v/ g8 x2 PThen Weight the Third
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( _1 Q3 O) a5 \Suppose 4-6 > 1-37 G. }+ d5 ]% U0 p: N) {9 }
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Just like the first Step
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& Q2 }+ L/ @1 @, Q, s$ J+ C) i4 vs 5   h3 A+ H  \) q, i

  A. A( Y, k+ O& s+ G$ a2 Qif 4=5 6 is the fake one
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- v; d3 Q2 k0 |. K* Xif 4>5  4 is the fake one ) ~9 W* l1 w0 N% M& N& b2 \2 Z
and so on......................

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, O; g6 x9 E) q9 I4 H) s問題第二步
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7 Q2 A2 ?" |+ i& q3 ]Weight 1:  1-6> 7-12
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2 k$ [6 D) y& j1 rWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6+ W8 r" k' F3 O0 d& O

' ^$ x' Q# x# t; ~  [; M你第三步点去搵 7-12 边一粒???
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========================================4 s& L4 w' ?& B$ G

0 J. C9 D, k6 m* w3 D+ i問題第三步
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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5 ^, N6 j0 Y- i! D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