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- i+ c; h. x: B5 N3 V" B
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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)。+ g6 w& v& `1 K8 E
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？』9 i7 T. j% F* z, T$ o+ Y
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注意:
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+ R7 U8 P5 b1 M" M1. 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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5 |* t4 S# {) X) V, ?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1 u; J: V9 e" A* r
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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:* V$ G" j% `) n" s8 l
相信e條題目都有吾少人玩...

) a, R" _2 R# H4 @+ ?: q7 S我以前畫左個chart去答,
8 W4 A& A! r# e/ l% L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。
# b& i  L6 K, l  O3 w# k& K  _13.........# E2 c* P7 g! |
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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:
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% p6 Z# r3 L+ N, I. q3 R* I我以前畫左個chart去答,8 `" \" g/ ^- X. e7 {6 M  f7 X
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:- R" w7 `) Y7 T# H# `! i
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4 ?% d! B% B/ _% `

  S2 [' D- h0 A8 R5 `5 U- k4 C[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
, ]! N  N( [3 H1 m0 V) C$ n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.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:" F, B' E1 h6 S' P
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.# `4 Z9 f& p6 D3 e- l/ }

- ^: A+ M* t( Y) p1 I& f1 MThanks

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* G3 c$ d: x" E8 ^5 u! p- b. I不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.7 ^* }" K+ x2 L7 J2 G1 s$ E$ {+ b6 `- L
1-6 vs 7-12
3 ~8 P% z; N! zif 1-6 = 7-12     13 is fake* D4 C* U2 T, [) K3 v: \4 e2 D
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Weight the 2 time
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Suppose 1-6> 7-12* ]+ g8 r4 W4 k) i/ |) _  m! K
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1-3 vs 4-6
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; ]7 B) u+ n0 `3 FThen Weight the Third
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Suppose 4-6 > 1-3( x) h6 L& e" }$ Q2 j

  Q0 z& W' K! q  o" M: W3 Z; qJust like the first Step/ L7 @* l/ [$ y, m4 }
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4 vs 5
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if 4=5 6 is the fake one
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' M' K2 F6 n0 p0 q) }+ Vif 4>5  4 is the fake one
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* S/ t* t4 D8 c! C7 Z3 q8 `0 B/ aand so on......................

hello1997

分3組4隻波子秤4 F7 N5 @' g! u. L" Q0 \( \
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Group A: 1,2,3,4# J2 J& V: x9 i" p. e; K, X
Group B: 5,6,7,84 l3 }8 r9 m* ]' b
Group C: 9,10,11,12! o% B/ ~& X/ @8 r6 p
Group D: 13
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4 n6 o5 @" }; i$ n' T3 |# m& i# sRound 1
. ]8 }1 c6 S7 j# N$ f9 W. n  QGroup A vs Group B0 x# z; \( N( G# S4 M* e
如A and B一樣, 即較輕一粒在Group C or D. W3 ~$ q8 @- }9 A6 b+ t6 |3 ~+ i% m
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Round 28 Y$ M" {! C! c- m  f
再在Group C拆成:9 Q1 m: a/ [. J) z
Group Ca: 9,10
; e0 ]  u/ b9 h" D6 Y, rGroup Cb: 11,12: d: T9 M' {. L- c
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, 6 R  s+ d( J- _' d, W
要再秤, Round 3, 之後便知答案.6 E4 O3 O/ y- U0 F

4 Q! k, ]- T, _- D% de.g. #1 假設10為較輕的一粒9 S- J$ T( r/ a) F
Round 1
1 N% p7 x. F7 h' K7 @( e  I1,2,3,4 vs 5,6,7,8 = equal
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0 O* z8 {, u  R: LRound 2
3 P: g. s& {# Z( ]9,10 vs 11,12 = 9,10 < 11,125 A6 P' l* b& k) \# ]% K" r/ i

1 @7 y: I9 {' `  sRound 3
. A: ]/ ?$ z  Z9 vs 10 = 9 > 10
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4 Q5 ^, d! P0 N: _8 t3 Z; SThe answer is 10.9 J% u" u5 B8 N, h& G. ~

; H$ Q4 z- x1 d! q/ C0 f3 [e.g. #2 假設7為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2- ~) ^4 p  z% G- k" @7 _
5,6 vs 7,8 = 5,6 > 7,85 n7 Z% M% D  h' p% j2 o7 S5 _. b- q
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Round 3$ W& b  a. N5 ^! u: I9 a4 J
7 vs 8 = 7 < 8& \: j7 B6 ?! A! N6 ^) s
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The answer is 7.
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, V' n2 p4 r& o' K* R' t3 Z* ?e.g. #3 假設13為較輕的一粒3 ]; t/ d& g1 e' y/ e
Round 1  Y: G$ }7 O  I  M: b
1,2,3,4 vs 5,6,7,8 = equal
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% P% R# ]/ g$ lRound 2- M! y, o: n- e; V* L5 ^0 B% |
9,10 vs 11,12 = equal
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7 f" A+ v7 u) B. }$ \0 E. w1 LNo Round 3
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, `  l& c+ h. D( vThe answer is 13.
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" v7 l  w7 m& L5 i唔知我答得正唔正確呢?! . t/ X& t; |+ Y% _6 g+ o
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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:! Z4 O1 F* d4 ~4 u( W
1.6 N, H' d% L& `& H
1-6 vs 7-12
$ C% p  Q+ n2 q- D& Rif 1-6 = 7-12     13 is fake7 |1 R& F- P: c- I5 ~

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8 Q3 h: P& ~# Z/ t9 p' p8 eWeight the 2 time 2 i# a3 l/ }3 ~/ g2 F" I& l

& L( c, ^! i0 P0 Z! X  iSuppose 1-6> 7-12
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1-3 vs 4-6
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0 Z. Q* C% K1 jThen Weight the Third
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, ?- A2 e" J' d8 d4 J- RSuppose 4-6 > 1-3
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0 b0 e# y  Q: G& s! ]" vJust like the first Step
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4 vs 5
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if 4=5 6 is the fake one
5 a2 X! u" m; I# J
6 U" n9 u; x. q! l8 Pif 4>5  4 is the fake one
4 `. Y8 A* k4 G8 yand so on......................

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問題第二步
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Weight 1:  1-6> 7-12) w3 a0 t! Y/ L( E
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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9 r& t3 x; t( E2 X) v. q# E你第三步点去搵 7-12 边一粒???  y( T) M( n$ s# d4 x; l
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/ a/ ?* o/ \) |2 P! m8 e6 X2 E+ W問題第三步" N6 k9 u$ f0 O0 I  P

5 `2 M( h$ l$ {Weight 1:  1-6> 7-121 t* H$ B! u- }

* E* J% t* }" H, a& ~5 Z' kWeight 2:  4-6 > 1-3 1 \  E5 x' P3 ~' c' _4 ^' m1 O

0 O6 b5 r% s3 j# v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