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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4 B% z: g) [/ M) v5 O  P0 J* X『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)。
7 c8 L6 v% ~  j9 _* \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: , G: E  y- e; Q
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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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! x6 l. f3 _# D  O2. 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
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; l0 x9 k$ z$ l; q% [7 P# G[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:( @/ {: w4 k$ P6 |* `9 h
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,
2 a1 s, d5 o, i$ g% D等我搵下仲在吾在
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( h2 K  i/ a! |5 ]5 f* ]# i: n當日用左37分鐘答１２粒波子，差７分鐘才合格。
! q+ ^1 e4 \) Z13.........
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4 C3 N* ]8 r2 h" [$ r1 t" r$ [* q3 Q[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:8 J8 b# g6 `) b0 C

' b  t. `+ `2 \) K我以前畫左個chart去答,
3 c# A$ R2 T6 C) r! [) U# [等我搵下...

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! G+ Y, K  p$ o$ J+ U* X5 l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:6 l+ u- z# ~% |9 v8 o' T+ v9 r
唔識隱藏...已經諗到..

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! Q5 t0 a$ z4 M! x: i( M9 gsor !!!....e加改左  n9 W0 \: S1 g' |: Z; P9 @9 l$ N

7 g$ ]- y' S( S; w/ M% ?# b* m0 X7 o2. 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2 s! @1 G) J; l+ N1 R7 R

3 f; w. Z5 k0 z0 {[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:' i: y# }' i) t4 I! S6 ?
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.1 n$ V3 W0 E- r, X+ v3 M. f
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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1 U. |  A! R; K不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
: ^1 j9 ^8 q% k' {' F( z  R" K8 b! T1-6 vs 7-12
7 L1 l8 c6 |& j- w0 \/ l' N9 F9 @$ hif 1-6 = 7-12     13 is fake
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1 F$ r5 F$ S1 r/ |if not
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% u/ |) Q" h% G7 P. L! ^8 OWeight the 2 time 4 E+ ]) {" j' }4 f

" G( X% Y9 `+ `Suppose 1-6> 7-125 A0 j9 i5 u4 a  ~

( p! T; J" v3 n; }# Q1-3 vs 4-6 1 |0 ]. q. R- A1 v, Z: o

. g. a7 W1 O( [9 Y7 YThen Weight the Third
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# W3 z" j- ~: q3 V  W! t% [; ~Suppose 4-6 > 1-3
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Just like the first Step
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0 n8 o) b6 Q. k8 e; M( P4 vs 5
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. e+ T" f6 S' ]2 Z. \5 f4 `' Uif 4=5 6 is the fake one : ~$ b* w* _3 e( n- X9 i
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if 4>5  4 is the fake one ! R/ u0 g- o/ C' b/ n7 l
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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' P$ |, s' X6 C7 z; D1 t% X3 ^
Group B: 5,6,7,8/ a% X* `- c+ `  j! K6 M% i
Group C: 9,10,11,12
' Z0 f7 E1 v) c$ \  IGroup D: 13
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Round 10 P: X8 g' n. t" o& `
Group A vs Group B5 \0 L- X; H! U; p5 |
如A and B一樣, 即較輕一粒在Group C or D3 g0 N7 ~" p- p/ n; |
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Round 2/ m& h4 k+ g9 V) N. ]; y$ v2 S/ ]
再在Group C拆成:1 J! b. M4 L6 R' u0 L( M3 s
Group Ca: 9,100 n0 M4 H+ V# |0 v. s
Group Cb: 11,12
$ M! e6 [$ U) L+ P2 Z' a" Y& Y然後再秤, 如一樣, 即13為較輕一粒.& q/ B0 Y; T1 Y. f
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如不同, 即較輕一組有一粒較輕波子在其中,
) Q8 M( `8 Z$ z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
3 u" `4 K3 I% I5 O( A* j# z! T& cRound 1
5 [, D% ?: d/ f/ Y' O1,2,3,4 vs 5,6,7,8 = equal
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8 s" b- u$ \5 H5 p" y- P" a* fRound 2
8 g5 B; _% j2 v9,10 vs 11,12 = 9,10 < 11,12
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Round 3; b! j- H- W- V; N5 L9 C% E) T( b
9 vs 10 = 9 > 10
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The answer is 10.
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e.g. #2 假設7為較輕的一粒
8 w6 u: B! {. ?( h9 |! QRound 1
" i; g2 L" k; N1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 29 ~# @0 J. k: u& ~7 n; N
5,6 vs 7,8 = 5,6 > 7,8
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Round 3
/ Y- t5 a% J# k3 _7 vs 8 = 7 < 80 I. _+ |; x5 b- v. O

( S0 ]" L) U7 R( Q+ P4 {The answer is 7.& H0 e0 s$ f4 l% [) o" n
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e.g. #3 假設13為較輕的一粒7 B( @- f3 ]: }# a& N5 z2 Z2 f9 _
Round 17 e- D! _2 l0 Z- L! H- ?
1,2,3,4 vs 5,6,7,8 = equal$ d) Y$ B9 O' G( G0 u
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Round 27 U7 }4 U/ e7 W/ S
9,10 vs 11,12 = equal) u0 F9 y' K! G

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) ]& l! \2 K3 q" {The answer is 13.; M' b1 I3 H" h, T
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唔知我答得正唔正確呢?! 5 w- e. O+ f  j" I& M! V. l, [" t/ b
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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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  H- ~: z% ]5 {! S0 L, P# V% B1-6 vs 7-12
: K; \: s9 L0 Z, ?if 1-6 = 7-12     13 is fake3 ~, J' J5 w* P, Y  m5 U% {
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if not + L. Q9 B1 w3 `$ Y4 c& x9 n0 B

" ?6 q5 M% I' I$ _3 Z- qWeight the 2 time / F5 N7 @+ i; \& B

7 z# P" s" N  {) RSuppose 1-6> 7-12% I* \- H% G4 v9 z# j0 ~

, M9 U6 ?- k9 k# U1-3 vs 4-6
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; y5 J7 T3 W, k- Z: t7 F- kThen Weight the Third
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& j+ T9 i1 j$ G6 ^Suppose 4-6 > 1-3& P+ B6 M5 B; z5 S2 p! M
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Just like the first Step: B3 u" F: S' V" M% \0 y

4 B6 t- M5 N2 ~9 S  P2 O4 vs 5
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: i# ^+ R3 O" ?% R! Z  V* cif 4=5 6 is the fake one
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if 4>5  4 is the fake one
* a4 V- J9 E4 }* k; ^9 gand so on......................

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) t7 m4 q5 m6 Q問題第二步
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Weight 1:  1-6> 7-12
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  ^3 ?$ [/ m9 `Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6( Z2 E0 J3 }+ o( k; Z
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你第三步点去搵 7-12 边一粒???. Z- n( u  x/ h/ i" Z

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問題第三步* p+ c! s# ^4 A& L& y! ?# w3 m- Z

! y, z. t8 j( L( Y1 \) V) uWeight 1:  1-6> 7-129 ?9 q2 Z' A6 l

3 [7 I# D$ W  ]' KWeight 2:  4-6 > 1-3 5 @2 f3 q+ U5 c( \5 x3 N, @
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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