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. |0 t  P1 U, f8 ^4 e
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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)。
+ J  c. O5 N3 n7 m; A. v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:
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7 q7 f  \0 ~7 a, r  V) H1. 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
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8 s9 w; `* s6 K- w1 @7 @[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:, V9 h) o. V, T0 y7 v# C/ |
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,& R; ~) ?# A+ q1 o
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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. G' W6 y; [0 P) O9 r2 u0 m7 l[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:% T: O: W( e( N6 k
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我以前畫左個chart去答,+ G- h0 [* N$ o% ^7 ]" T" }
等我搵下...

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" L, ~+ e& r9 y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:
+ u2 ]! H6 o& P+ i唔識隱藏...已經諗到..

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$ {5 y' w( L. w# b1 dsor !!!....e加改左
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/ f, l  i1 l4 H- B2 c2. 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1 s# ]& Y4 j  X& r1 I
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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:
, m& J' ]2 S; f相信e條題目都有吾少人玩...

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& |9 _5 _& }% l3 sPlayPlay, Let me know later who has the right answer and I will add points accordingly.8 h) t# K) i- K+ N. a+ y
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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.; D# e# b* r5 w: t% v

( {, l! c6 Z% ]3 Q" D1 |( eThanks

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2 n7 o# e/ h- L2 _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
$ B, @( h; z$ A. rif 1-6 = 7-12     13 is fake
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Weight the 2 time 3 y1 h+ @4 R" B5 o! Y$ M" |
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Suppose 1-6> 7-12& K1 F% `7 ^8 S/ J" L
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1-3 vs 4-6
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9 P& p% h' Z1 q$ U4 N- DThen Weight the Third
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; C" `7 G$ v! D  ^Suppose 4-6 > 1-3+ W. b% M! c$ C& ~- u5 U. }% D
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Just like the first Step
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& `; p: o- e& D4 vs 5
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7 c: t, v( Z, Fif 4=5 6 is the fake one
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if 4>5  4 is the fake one ) w- Y5 m4 z( g- W
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and so on......................

hello1997

分3組4隻波子秤7 q" T+ h1 D* b, A
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Group A: 1,2,3,4
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Group C: 9,10,11,12' c$ L, X/ |0 c, U+ C1 h
Group D: 13
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Round 1
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1 a5 e0 C5 t8 T% u如A and B一樣, 即較輕一粒在Group C or D
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Round 2
# l) H2 q0 t2 H1 W再在Group C拆成:
1 o. {7 b) q% d! G0 kGroup Ca: 9,10
% U. D2 O, C% N0 g* ?( `Group Cb: 11,12
/ j8 k0 p7 D: _- H, O( a0 Y然後再秤, 如一樣, 即13為較輕一粒.* l2 b. c) U& O7 e$ [7 t
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如不同, 即較輕一組有一粒較輕波子在其中, , H& ^6 c3 D: \* @  Q! h/ D% o
要再秤, Round 3, 之後便知答案.8 j6 U2 a' Q' I( a. }8 e8 V
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e.g. #1 假設10為較輕的一粒. N2 s: O5 d2 W, {' v. c. @
Round 1
) W- V8 w8 c3 N' @( U/ S1,2,3,4 vs 5,6,7,8 = equal
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( W1 }) m& r5 VRound 2
! Y( d$ a. P! F; L( j+ D9,10 vs 11,12 = 9,10 < 11,124 Z, `' ~! {" H  ?- O: `" E: g

4 h" H) N1 ~1 V9 y9 M7 t. URound 3" s0 N; B8 {, N: i# K/ ?
9 vs 10 = 9 > 10
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+ [, r3 W4 m! i5 o; B- KThe answer is 10.
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e.g. #2 假設7為較輕的一粒% `$ V( X. }& C! ?
Round 1
/ Y: t# H8 C/ p" ?) O  X1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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0 G) g& w$ i4 R- g( Y2 q+ }; gRound 2
# f! g& C9 L0 d' A: `7 q5,6 vs 7,8 = 5,6 > 7,8: b+ n+ K% W" ^& o' h
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Round 3
* G3 _! d+ K7 p% N6 `) h) r7 vs 8 = 7 < 8: q) S; J/ c; w. z# `7 h0 G1 n

: m% w5 U2 ^+ V5 Z7 I: |" m% S% RThe answer is 7.$ ]$ O7 |4 k* T! C
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e.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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/ b1 F0 v: R: X9 L7 r( xRound 2
; |& ^0 d+ _7 ^) ?9,10 vs 11,12 = equal
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No Round 3
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9 X6 w! [0 F8 ~The answer is 13.9 {6 G- D( C% t# j2 V
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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:1 o7 Z3 H1 H6 O7 u+ L7 q6 g" x
1.
7 b* L2 O- _9 S: `7 o1-6 vs 7-12
- g: }/ n$ a5 u. ^if 1-6 = 7-12     13 is fake
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8 E2 ~6 S3 e. m1 u/ Oif not
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, A; g; E: i  k( }8 l: d9 |8 j" lWeight the 2 time & i" C" \; Z; `$ n
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Suppose 1-6> 7-12
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1-3 vs 4-6
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2 i- _/ c0 `" }9 X8 y* Y; L' [. {# LThen Weight the Third$ v* e3 Y# W( ]
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$ h' k! B. g, F) n- [# B$ xSuppose 4-6 > 1-3
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( X- ?2 S' E+ T9 A: A( C5 P4 DJust like the first Step8 I% b5 W1 f6 N, D3 Z. z( ^
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4 vs 5
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- _* F* `: _7 c, D1 N: pif 4=5 6 is the fake one
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if 4>5  4 is the fake one
% r; ], C: d+ j9 C/ Gand so on......................

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問題第二步; p8 @: a" [7 Q6 W# `
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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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" ?. F2 ^* l9 l- q; u0 c# j你第三步点去搵 7-12 边一粒???
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問題第三步; A9 p  F7 }( @$ U7 C

% r& F* z. w6 W2 Y: }- FWeight 1:  1-6> 7-125 `8 P) X0 p8 b& Q. G
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Weight 2:  4-6 > 1-3 ) _3 _9 i1 z: j
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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