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6 V$ ]: {9 i( {  _7 Q2 G
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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)。
3 ?3 ]+ s; F4 Y/ e( ?. e. D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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/ ]9 w- u# O! _" W7 p注意:
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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9 ?9 F% Z$ H$ n$ C* 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  , hide 字要連埋 , 內容 = 答案
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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:' X( m. [; S& x
相信e條題目都有吾少人玩...

1 l5 l$ h* ?: m, l9 u我以前畫左個chart去答,
2 z* Z5 s* K0 Y8 c等我搵下仲在吾在! z0 A5 Q2 N2 \! d5 d4 M
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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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[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:/ O% o0 n3 _+ @2 i; w: k
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我以前畫左個chart去答,1 M- s8 q% X) V% h/ c4 q
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:" U2 R9 M$ X, Q& o9 U' T% a1 U
唔識隱藏...已經諗到..

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sor !!!....e加改左5 G! S% u2 N- Z$ W- U- B
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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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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:; B5 r3 f3 B5 |9 ]0 b/ |
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., |  v, w* Q# T4 e

6 [" P# s1 o4 H  A  ]5 l9 EThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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5 G2 {1 ~; M0 G4 [) f5 V* ]7 uPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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" _6 J0 j) o+ ]: T) C+ s7 g3 M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
' N. }: G. @0 z. _8 W2 d8 l7 j" R; {if 1-6 = 7-12     13 is fake! [0 a0 V+ ~- M2 p: T8 D' c
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if not
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Weight the 2 time
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Suppose 1-6> 7-12
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5 d: t/ M! U; ^0 K& B1-3 vs 4-6 : r5 P( A7 e; `; ^  y

1 r" k! ^5 V) z  hThen Weight the Third9 R2 Q( p7 o/ S4 T
3.
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Suppose 4-6 > 1-3
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Just like the first Step% F, _) T* A8 y

% X3 W4 C2 U  O3 M9 |: A$ w$ F4 vs 5 1 ~+ L$ X: S7 i5 |9 {$ e

- F$ b" m# v. |# Mif 4=5 6 is the fake one + z- O0 J6 Y' ~, K- ~' M
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if 4>5  4 is the fake one 6 _6 j6 F% R# @  A! ]

/ Q# q7 r7 m0 t" R$ eand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
2 j. L# W  A6 h: J8 W' IGroup B: 5,6,7,8
1 h4 e+ H- _( p, n- L, q0 N5 KGroup C: 9,10,11,12
6 J/ G7 ^$ u" h5 ^* L! T: u% [: d: YGroup D: 13& e2 w! L3 Q% p" n# F
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Round 19 ~& E" O8 f3 v6 n( O( |7 r: v4 ?
Group A vs Group B' b/ ]1 @  u, x1 [  r/ U
如A and B一樣, 即較輕一粒在Group C or D
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Round 2) [7 ^/ n$ w8 r1 _( _) H
再在Group C拆成:! S* O  d" i8 x1 y5 d" v) m
Group Ca: 9,10) f+ V+ O# U" e3 M
Group Cb: 11,12
% a% s& E% w$ z% M6 H然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, / ]% F* @1 Q% l4 e  g
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
( V& k- {) ?* S/ Z% C, u4 _Round 14 ^5 }) V( V7 U7 R% o
1,2,3,4 vs 5,6,7,8 = equal
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1 s& G9 t6 E7 }6 `Round 2
2 G! h5 `0 X  g; D0 A9,10 vs 11,12 = 9,10 < 11,12
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  R! j2 ~4 b" [) l" ~, X, B6 IRound 3
; ?5 K6 H( i+ d9 vs 10 = 9 > 109 e7 Z( k6 M8 p$ H

0 _5 K* t( e0 {/ RThe answer is 10.3 q. g* y  E$ k9 z7 G: }: P2 F% |( h
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e.g. #2 假設7為較輕的一粒
* Q# z  x5 P+ C$ ]& z( qRound 1# c' @7 ]- n% s/ |/ e; ~' r' n
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
  Z% D, t4 x7 u6 N) Z, |/ e5,6 vs 7,8 = 5,6 > 7,8
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3 n2 c6 j0 s2 c7 m- pRound 3
3 Z6 Q6 v: G  g$ w. J) h3 f7 vs 8 = 7 < 8
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) c6 @) s) [7 o, FThe answer is 7.
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$ U. F- B+ n8 \% Ae.g. #3 假設13為較輕的一粒/ \' {8 c  o- S' c+ ~
Round 1
2 y, C5 s+ c( B$ G1,2,3,4 vs 5,6,7,8 = equal# o  X+ F) G6 J( q" W

3 L; K' A: X" S7 W/ VRound 2
. F! j- z9 A$ y/ S9,10 vs 11,12 = equal/ N1 }( Q# G7 p  k+ n  t' Z

# B- k+ ~2 G- m) ?2 DNo Round 3
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The answer is 13.
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5 k# S2 _- T$ R, z+ a唔知我答得正唔正確呢?! , B! p3 u1 N) ]  V0 @, ?3 r& z
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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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4 W5 E# o5 s) ]* k% w3 Y" e. K8 q1-6 vs 7-12
# ]; |' f! F; m! q0 l. T1 Uif 1-6 = 7-12     13 is fake
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if not : M* d/ i( \8 ?. H

& P. S0 z9 N, {. }( t" CWeight the 2 time
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Suppose 1-6> 7-12
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' s" v, E  N! ^" e1-3 vs 4-6
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Then Weight the Third
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2 N. o+ E( J+ l. ESuppose 4-6 > 1-3" I; d$ Y" a0 `% u# a$ p

; ~. f- c' c% C% [$ bJust like the first Step  R, o: X1 E( }
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# Z7 N* r2 ?( Qif 4=5 6 is the fake one
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if 4>5  4 is the fake one
8 t3 G2 N1 a' E& ?: Xand 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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5 W' R) y4 I) }. H6 UWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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5 g3 L6 h5 o0 G% X  s你第三步点去搵 7-12 边一粒???
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========================================
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問題第三步2 z% w' g- h% k6 E

8 O% T! c& H0 Y) {4 j3 V6 ^Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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  [+ o* B" @" p' ]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