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)。/ X: [! _% K, Z8 C: @/ _6 s
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？』1 E0 {: o* z( v' N2 k0 O; J: F. _
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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6 G4 X' j5 `& d6 G5 g5 c  T( @

1 X% B! y$ r4 p: T0 q2. 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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/ r, W3 b% ~0 p$ u/ z2 @6 \! Z[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
/ H. n+ T3 u  r4 _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,
8 I' r% m2 R4 C' F% B: J( O等我搵下仲在吾在
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5 |) u( F2 u# j' z6 g當日用左37分鐘答１２粒波子，差７分鐘才合格。
; G* U. B3 M  J7 H0 L% n- t13.........3 r6 `8 R! S% Y  c5 ~: e/ b

$ w) w# Q; _# o[ 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% J7 D3 h/ c& B8 F. Y2 E7 K

' w. J/ W& A3 ^$ y, L我以前畫左個chart去答,% Q. c* Q, l7 n/ z; x7 N" k# 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# o- d' O, }唔識隱藏...已經諗到..

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$ J7 c7 k* P3 ~5 |. p4 v2 @3 m  Tsor !!!....e加改左, O7 O2 W8 K  _2 Z

0 V3 y' Y7 r. i2. 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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" _- o$ o# P: ]# o[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
5 {! H' l& [' W) {9 P* |8 `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.
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' p, T2 ~0 H/ w9 zThanks

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.. Q; ?3 k# J* U
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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

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1-6 vs 7-12
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if not
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* n7 _5 {% d8 N; k) n1 c& XWeight the 2 time 3 s. w) ^+ ]' I$ U1 r
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Suppose 1-6> 7-12, V4 _8 c0 R7 {! Z7 D! {& d
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1-3 vs 4-6 5 M. r. T( ?0 e4 _7 x7 |6 J
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Then Weight the Third7 |3 L8 N9 K* h3 r8 Z8 A9 x1 j
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Suppose 4-6 > 1-3
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Just like the first Step
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if 4=5 6 is the fake one
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9 y0 E- m8 ~* A5 Xif 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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) `2 |  l- B9 xGroup A: 1,2,3,4; \, o5 C  C9 U" M
Group B: 5,6,7,8
& J8 v, D# V6 L( L2 ^4 X! w0 PGroup C: 9,10,11,12/ l8 ?" `' E% E% u9 K. S
Group D: 13. R! L8 U1 j# H& r* X
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Round 1/ N6 e5 d) o4 s7 B( d% t
Group A vs Group B
# @8 s# N: I5 F; `3 T6 k如A and B一樣, 即較輕一粒在Group C or D
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Round 2
  P3 n! H- I" C再在Group C拆成:8 @0 D. A5 S" H7 c/ P
Group Ca: 9,10- J! }% {4 k' e* ?5 t5 Z
Group Cb: 11,12" l" C/ ~- `. }( d7 w
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 K" T1 v& ^7 o7 @
要再秤, Round 3, 之後便知答案.
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$ d. E1 b, }% B) p# X# m% Be.g. #1 假設10為較輕的一粒
+ m3 a* I$ u2 k7 L, t* B! pRound 1+ N- _( r& \/ v+ e$ f3 p0 P
1,2,3,4 vs 5,6,7,8 = equal
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# m5 S% W% O- e' x/ LRound 2% r5 g$ I$ P/ L# h* j
9,10 vs 11,12 = 9,10 < 11,12/ b0 p5 O# Z9 x9 a5 A, f

- B! q* X* W9 h/ G1 \: \2 B7 nRound 3; T' j7 m9 p. @! e
9 vs 10 = 9 > 10
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- B7 g. O0 ?; |The answer is 10.
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e.g. #2 假設7為較輕的一粒
, y! d3 v6 X: n5 L! S. ]: y+ ZRound 1
9 h9 Y' c* v1 M, H( c+ z" t2 T1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8; G* G8 m" k) g2 B0 d4 v* @

1 ^" F. \+ @. U; \1 _+ p1 HRound 2
7 {+ }# o1 k% R0 B" p7 B8 ^0 F" L5,6 vs 7,8 = 5,6 > 7,8
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, H4 c1 u6 @, aRound 3( H4 M6 Q! b# N. v2 Z- l  T2 {1 o
7 vs 8 = 7 < 87 H3 w8 s9 x* o" Q" l; d

* B" }& k6 G" i- Q) [& @7 i7 ~The answer is 7.* o) e! q: v# [  p& P$ Y: z0 [

9 J1 T9 ^9 v0 Q2 we.g. #3 假設13為較輕的一粒! N2 u/ r/ c$ }, e- L8 S# U
Round 1/ I5 P4 M& @5 I* z2 A
1,2,3,4 vs 5,6,7,8 = equal0 R' u; V$ H3 l8 x8 v

% H& ]$ ~: h6 n: j/ v, @9 SRound 2, G9 O8 J, h2 Y2 Y' N5 f0 M  U
9,10 vs 11,12 = equal& o1 _5 K) x3 H5 y' M" G

+ J2 y8 G8 ~2 A9 r" e, a, dNo Round 3
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The answer is 13./ n  f, G+ c6 Q

- \$ Y( _. A6 G8 z9 Q+ k$ R- U/ ^唔知我答得正唔正確呢?! ) h1 ?$ t# g, k1 _$ |

0 L6 S- q2 ~. u4 Z, \: t: B/ |[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:" E4 u% J) A0 S9 M' X/ o, s) C
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1-6 vs 7-124 ?9 _- @3 V; g9 v* b! X( z! e
if 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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Suppose 1-6> 7-12! j7 [: V# Q' c7 x$ I5 ?- X' \7 X' |

/ b& l5 }" ~# E8 m/ c/ n/ A+ h( F1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3* r' O) b* e1 b9 T( I0 b4 f  h; y
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Just like the first Step
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4 vs 5
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3 D) H2 m# G0 H+ l: _! Wif 4=5 6 is the fake one
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if 4>5  4 is the fake one
4 R, w  g* E$ d' g$ n, e" wand so on......................

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1 N4 ]8 j5 y) `3 Q1 u0 T# H4 Y問題第二步
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/ U8 E* a7 U( A% n/ s1 nWeight 1:  1-6> 7-12  b4 V3 s" a+ l$ |, l1 ]# ^
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???6 U1 P4 j# e& q

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% V  k2 }/ _, Q( L問題第三步
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Weight 1:  1-6> 7-124 i0 v  }5 d  k5 R7 u
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Weight 2:  4-6 > 1-3 ' O+ H; i# i5 h  {3 B- i- P
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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