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)。) T4 j- K9 A9 ~; o0 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？』
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: `6 s, r9 A; @" g1 P7 A/ c: Y! o* [注意:
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' X. _, _" A. B8 ^* B$ k/ C1. 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. |) X4 ?8 I2 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:
  `  n, ~0 |/ A+ o! m/ \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,
3 e% [% D9 K+ m6 m9 @等我搵下仲在吾在) k9 r) _1 e, U# _$ w2 t& ^
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
4 t# Q" |6 d5 b13........./ `# r$ N* s* v$ L/ b, i9 {
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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:4 ]/ w% E; w. i6 ?
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我以前畫左個chart去答,
9 `0 h/ m& K* p4 g+ U) u等我搵下...

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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:
: C- s' I/ i" F8 n' d唔識隱藏...已經諗到..

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sor !!!....e加改左
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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
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1 A9 K* d% n6 p. _' W[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:- ^0 f  d) A5 Q( ~+ z/ S5 ]
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.! G0 @4 K6 y$ A! ?0 O: z
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:8 G# o! y7 E5 I; Y7 z# R( N

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.. ?% \& |; z( D- u6 V: z0 h
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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

1.
9 s4 y& f7 m& B) V$ o+ H1-6 vs 7-12
0 O, l( d. o, L9 rif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time
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! {. R+ _) w9 gSuppose 1-6> 7-125 a/ X1 O# z- [

/ R, c4 e7 n2 a/ I1-3 vs 4-6 * {" Q8 d# E( |' f" k; G3 @

* g0 R6 [0 F% K+ i: u$ dThen Weight the Third- ^& A. e/ Z4 K& s9 ]! w/ k
3.
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: F* l! k) K7 d& ~' g: ^Suppose 4-6 > 1-3
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Just like the first Step
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" I' Q% R3 g% L- f$ [5 E4 vs 5
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  A% c9 q' t$ D1 k: mif 4=5 6 is the fake one
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if 4>5  4 is the fake one
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* Q; h1 |* @9 P. Q0 _  ?- Y+ Gand so on......................

hello1997

分3組4隻波子秤
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8 y# e, e! [1 I5 G" VGroup A: 1,2,3,4- X# h. R4 v6 x2 d* a$ H
Group B: 5,6,7,8
) u6 X0 B& o! l/ RGroup C: 9,10,11,126 F. X5 y5 B/ t" p; v- f
Group D: 13
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Round 1
* H4 I+ @4 K8 j4 @. _Group A vs Group B7 }( M' t0 K& ]) P
如A and B一樣, 即較輕一粒在Group C or D! c3 e' L* q4 r! i) Y" \: \* i: H
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Round 2
% y6 T; `0 p# y6 d" R' h0 {, G再在Group C拆成:
5 F, K6 A- J) s" `0 }8 Q* a5 }Group Ca: 9,10
( k7 d0 Q* F& l3 v( sGroup Cb: 11,12$ t- g5 R, p  b  Q' a5 G
然後再秤, 如一樣, 即13為較輕一粒.1 B% ^3 G4 C: V  d+ L9 P, Y2 Q
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如不同, 即較輕一組有一粒較輕波子在其中,
0 z. l5 ?+ @4 z( k& u" ~) l' G- z要再秤, Round 3, 之後便知答案." a' F' @! g5 @2 t' X

% V4 C, o8 u( e# v) N0 C* |+ g) Ze.g. #1 假設10為較輕的一粒# q% v0 v, [8 y8 }( s1 s
Round 1
% M& `+ y" i' X1 E1,2,3,4 vs 5,6,7,8 = equal
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; T; f3 Q: d6 c* B# u. c4 KRound 24 n& X! [) i6 i) @) W7 n+ Q
9,10 vs 11,12 = 9,10 < 11,12  S/ y1 L7 @$ x/ f
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Round 3
. v+ R! B& k& y$ K1 v( f1 M8 o9 vs 10 = 9 > 10. Q3 q5 X5 Y3 F

& ]1 l! g6 Z/ T6 E$ Y1 O+ |The answer is 10.( D/ ~: U3 |0 ?+ V) w% t1 P
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e.g. #2 假設7為較輕的一粒- H0 g* z$ V! O" C. ?2 E& w
Round 19 P1 F$ }6 N) z' [  N/ n9 R& U
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,89 Y& v; `2 m. {5 N% W5 f

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5,6 vs 7,8 = 5,6 > 7,8
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3 l! X, B5 |2 s& H1 C9 K! I& A3 x- ^Round 3+ D) D1 P+ p3 ^) W
7 vs 8 = 7 < 84 q3 {9 I: W/ v# F7 ]) _" g3 A* `1 y

( G  `0 e6 E+ u6 IThe answer is 7.& ^! `0 y3 C5 _

5 {# t& j2 @* x3 V, F; y8 v1 oe.g. #3 假設13為較輕的一粒
6 j$ ]: G8 F9 G+ U6 z0 U; _' b: f: VRound 1& j" C: Y# k' h
1,2,3,4 vs 5,6,7,8 = equal
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$ j0 K" @1 V  d$ qRound 2
. Q' M8 I! k4 }. W5 b: n9,10 vs 11,12 = equal0 ]: d) W  m# D5 N* z9 z; C
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No Round 3
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The answer is 13.9 F' G" z4 ?. L1 \. r

+ c# u  L6 `' A& x& E7 k唔知我答得正唔正確呢?!
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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:' J/ a) L- I5 ^+ K! j( l0 f
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1-6 vs 7-12& Y% b& J$ }$ T2 c
if 1-6 = 7-12     13 is fake  _1 m$ N) o; y4 V/ S. j
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Weight the 2 time ( Z$ F) |  [7 N" z; L: i* a
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Suppose 1-6> 7-12# Y3 n; G7 G- h; `

9 ~  B* {' M" \2 a3 y: ?3 H1-3 vs 4-6 : a( k$ J1 ?& u: r3 X) E
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Then Weight the Third1 w) T3 `" U8 r) W6 v
3.5 ?1 C. N1 B# W
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Suppose 4-6 > 1-3
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1 {7 F- S6 l8 k5 O+ g3 s  F* V( ZJust like the first Step5 p* g( l, E1 E. F; k* T1 b6 j

  d9 d3 @" i+ g5 z; ~$ ^9 e6 m4 vs 5 0 y! e8 m: O3 I+ c; V$ T
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if 4=5 6 is the fake one
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% I. N: b) g2 A; jif 4>5  4 is the fake one
) G8 e+ `4 h- Jand so on......................

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: V7 c1 N6 p$ E$ v2 s" m問題第二步  u) P. J' t% i* S
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Weight 1:  1-6> 7-12) @  m6 b. b3 r

* n! H+ u2 k2 c& X8 a7 }Weight 2:  1-3 vs 4-6 , if 1-3 = 4-66 h0 ]5 j2 G7 {* j) m) l$ M

4 b" ^- ^( `# N5 H( \* A  M& P/ ]7 {你第三步点去搵 7-12 边一粒???  g$ A  I' h9 Z/ M3 p& z
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========================================
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3 o2 X8 `0 y9 K5 M* j) H2 M問題第三步
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Weight 1:  1-6> 7-12
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$ j" m: C: x5 zWeight 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