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+ ?/ G6 x) y, E0 M0 w3 q

3 l  C" V, _$ g% H# @『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)。
5 S4 Z- B# w: d( E; c) N4 p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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注意: : |0 d) S- |8 h  _" A/ X7 ^/ Z

+ v4 F5 X! X( O. T1. 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9 Z& h0 ~. a% b# s9 f/ E
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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:: W$ N- r$ l' f0 v1 f
相信e條題目都有吾少人玩...

) t& D0 H+ v$ [) h  T我以前畫左個chart去答,% O2 j  K1 ?* H$ [6 F9 c( 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。
" x' u/ T2 H$ I8 h13.........% n% D# S9 H# v1 b7 ?

1 I0 N$ m$ N- ^( J5 D# X[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:- k  M$ a9 X5 h7 F) _$ ]9 A
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我以前畫左個chart去答,
8 s! j: I$ e! j  ~. c等我搵下...

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4 H9 B, a& w" |; j' K  F6 z5 |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:" ]+ A$ `6 B4 y) M/ E" u
唔識隱藏...已經諗到..

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sor !!!....e加改左6 T- Z" V" H6 o4 y# l' J/ v% ^* s
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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9 `0 z$ n1 g# [
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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:
1 z6 j( C  y$ g9 k" f6 P+ d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.3 [; J$ N3 k* K$ q3 a" P6 Y

3 `7 @' {' a- xThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:3 k+ e7 v1 l& r2 b9 W2 D: E# \$ k
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8 F/ D" L8 E6 ]7 hPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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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
- {2 t( b1 l+ K0 d% F! W/ vif 1-6 = 7-12     13 is fake$ b& m3 Z# H% s# a

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1 W% u# ~& N+ [1 OWeight the 2 time
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Suppose 1-6> 7-12" w& H. \7 \! Z3 X
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1-3 vs 4-6 + n- \+ J' M* [1 s
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Then Weight the Third
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Suppose 4-6 > 1-3
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Just like the first Step( L# b* T/ T) c/ i- U, f
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4 vs 5
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if 4=5 6 is the fake one ! X. h8 `6 _- Y1 ^
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if 4>5  4 is the fake one # `. i$ @' z& r$ @4 K. E5 j3 n8 P) a

) U8 }8 V9 c6 N* }- Hand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,44 P2 \5 e, H  q# m
Group B: 5,6,7,8! l! V5 r9 T6 j1 T8 ^, D
Group C: 9,10,11,12' o3 R1 o$ c; E2 D- f; ~' y5 m6 ~; x
Group D: 13
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Group A vs Group B( s( [; h) p! f5 x' u
如A and B一樣, 即較輕一粒在Group C or D" _3 }$ x" D( E# B2 @1 O

2 a: X3 {) T. LRound 2
% h$ s- E9 f3 R* D再在Group C拆成:: S) [/ z5 n# i8 B. }9 m  z
Group Ca: 9,10
2 J( G: t; s( w3 w9 gGroup Cb: 11,12$ S9 p$ |7 O7 L7 ~
然後再秤, 如一樣, 即13為較輕一粒.
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8 H; }" t! B8 d5 ~如不同, 即較輕一組有一粒較輕波子在其中, ' c# u& `4 \+ t+ d3 Q7 v
要再秤, Round 3, 之後便知答案.
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: t2 G  \3 M* d1 c3 [+ ?. P5 J* r# ke.g. #1 假設10為較輕的一粒
, p9 Y. p% F/ z0 D+ gRound 1) O- m' B4 [; `# x0 l
1,2,3,4 vs 5,6,7,8 = equal! c& i' M3 n# B) z% f5 a1 L
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Round 2
, a6 Q7 r# x8 {8 p* x7 x9,10 vs 11,12 = 9,10 < 11,12) _2 S8 f, a% H8 p8 V

/ f7 e8 [8 g! T5 \- SRound 3) O: p0 q4 q4 f# R( G& Z# [% F
9 vs 10 = 9 > 10
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The answer is 10.
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1 t9 P( R! G7 Le.g. #2 假設7為較輕的一粒3 E/ Y3 m4 J  [5 D$ W. D. g
Round 1" m3 L- o& k9 v) ]
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
4 y+ F; ^' R* G) f. W; @2 i6 c8 F" P5,6 vs 7,8 = 5,6 > 7,8/ W5 h7 H( Q, P' O7 t
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Round 38 {: O1 R  G6 U; {- {0 o
7 vs 8 = 7 < 8
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6 N7 b% |4 Y$ e: A* K% X9 UThe answer is 7.
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4 Q4 r) A/ W- V) ye.g. #3 假設13為較輕的一粒
  P! q2 n( z% \1 hRound 1. b8 b- d  @5 L
1,2,3,4 vs 5,6,7,8 = equal
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" a, I! v2 U7 LRound 2+ Z$ G3 K8 i3 H, k
9,10 vs 11,12 = equal
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No Round 3
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5 Z' [  d) b5 ^- W- B, k( t1 @- P# X! _The answer is 13.. Z: y; h% m6 `
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唔知我答得正唔正確呢?! . b% q8 ~7 ^3 E; }7 `7 n
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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:( Q- y: n+ w8 d. f# Y- q
1.
- _+ B) p3 |. q" S1-6 vs 7-12" }% N! N7 ^& J& m% Y% F) `  [
if 1-6 = 7-12     13 is fake  p2 r6 U% x7 {0 N9 g. @  o/ f0 E
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if not   }9 ~" j* S/ U5 M/ n- I

) L% Z: s) `' c1 \' ZWeight the 2 time ' z2 W9 ^5 w; W% B& X

% R/ z) P; I6 s4 S; Q* CSuppose 1-6> 7-12
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1-3 vs 4-6
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# q0 Y+ t8 r/ L9 w  RThen Weight the Third
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Suppose 4-6 > 1-3; h9 h( Y" X7 ~- W, x( W

0 n. R+ T- L$ S2 K" N! ~Just like the first Step8 |  s- {; s: z# i  t+ `: Z, m3 E
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4 vs 5
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if 4=5 6 is the fake one   ^; N) |4 a4 O' U4 P9 t# s
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if 4>5  4 is the fake one 3 a: c3 w; v/ o  `; m1 ~
and so on......................

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問題第二步
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Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???
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問題第三步" v7 Q. r8 h. d- H% _4 q

3 b9 B8 Z6 p1 ~; i, ?Weight 1:  1-6> 7-124 B) R" p' L  s( K

7 X1 s/ W- z3 D3 R8 c3 \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