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)。  F; I# B! A3 B; t# i
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？』8 B) j8 ~% [# `! g# v( @2 A

2 q7 v/ ]( M$ c" H& T1 j1 @( K# X8 |注意: 7 {1 x4 K6 C8 @# P& T$ @
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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
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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. g/ d1 \9 }' z( |6 j

5 |, G. {; e8 V! d  D* ?6 v* R[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
4 l! w& i6 |8 z相信e條題目都有吾少人玩...

2 y( o' x$ `& M" x5 s7 i我以前畫左個chart去答,
$ @" k/ n, R3 d$ w* W等我搵下仲在吾在/ [2 w% F& w7 p$ @
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當日用左37分鐘答１２粒波子，差７分鐘才合格。) g: v6 i, X: a2 L: P7 f
13.........
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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:3 R/ _) W5 d  u! f/ `
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我以前畫左個chart去答,
3 y$ f( }* y5 F等我搵下...

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3 w, |$ W$ L# U4 p5 a" H8 h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:
1 y* [& }" L: O; [7 v6 a$ E唔識隱藏...已經諗到..

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sor !!!....e加改左
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) [( Q  O+ r1 F/ F3 n# r1 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. M/ Q! t1 K& {4 v: c8 x7 U5 v
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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:. r' [# F, ^: y! d. G1 ]
相信e條題目都有吾少人玩...

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: z* w3 [4 e1 e" Z; r% A7 XPlayPlay, 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:' ^/ ]! \, j1 P! C2 N" \
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% x" \* f+ k2 K' }# L$ UPlayPlay, Let me know later who has the right answer and I will add points accordingly.1 Z+ i/ {% J% i

3 w& ~" o; |" S2 Z4 |4 hThanks

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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.
0 W/ B, I7 ~* t5 x! f# A1-6 vs 7-12
" s, @8 a& t5 N* d9 sif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time 4 `' t/ {5 F- l( S/ J

+ W2 H4 m( z! rSuppose 1-6> 7-12
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  l) m  x9 D+ v  W  |+ j5 G; v" k' R1-3 vs 4-6
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Then Weight the Third2 F' f% ^4 s4 A  I" x
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Suppose 4-6 > 1-36 M( H/ z: ?! H) G" \
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Just like the first Step
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' @' `, }( n. @. ^. {) i, W6 a4 vs 5 1 V3 A9 ^. [. k. D+ U6 ?2 F

1 I3 ~( |( \3 C) n# e! ~if 4=5 6 is the fake one
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if 4>5  4 is the fake one ' g& k( {. T# v6 H# m0 q
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and so on......................

hello1997

分3組4隻波子秤8 N& ]# h; D3 y+ p( c. O

( o" i. w& c" IGroup A: 1,2,3,4
# ~" t5 f- x9 q0 DGroup B: 5,6,7,8; ^: c. s  G* R7 V# ?$ Q$ J+ S- B
Group C: 9,10,11,120 P& s) M$ u6 e: \- N1 Y
Group D: 13; o, Z2 ?$ w8 n( m. y

! b: m* y* ]( @Round 1
$ @+ D3 c: c( W, U0 O8 d* _+ r! L1 G7 B6 ^Group A vs Group B
. W0 C. w6 k0 n9 c7 Y( D4 [% }如A and B一樣, 即較輕一粒在Group C or D
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  _) h0 v1 g1 e3 U( e) ?Round 2+ Z* R! t0 f1 m" X
再在Group C拆成:9 c+ U( x( J; z& x2 }
Group Ca: 9,10
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然後再秤, 如一樣, 即13為較輕一粒.- |. s1 {9 s, Q

- `# g: n+ @6 B  q5 E2 P如不同, 即較輕一組有一粒較輕波子在其中,
- f. V; p% g. ]1 ^8 P% c( K要再秤, Round 3, 之後便知答案.
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! h3 D2 ]2 F* u7 A) Y; B- be.g. #1 假設10為較輕的一粒
6 C5 T+ W7 A7 J- U1 BRound 1. k" U. T0 h# o4 B2 C
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
3 f2 q" u7 b$ Y9 d# B; t) k9,10 vs 11,12 = 9,10 < 11,12
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Round 3
  e7 c4 ^1 w: L* d& ?* h9 Q9 vs 10 = 9 > 105 p9 u) ]( L# R* K9 e3 t
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The answer is 10.
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3 e: S" y0 C/ E5 T" U4 Pe.g. #2 假設7為較輕的一粒8 }$ n5 L: q( j( `: m9 ?
Round 19 `  c0 z' ]0 x
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8# C, g/ K: u; P& N  _! i  a

, o9 B: U9 D& ?2 v: O0 IRound 2
1 U) {6 N5 j) D# A  s+ r) D( I5,6 vs 7,8 = 5,6 > 7,8
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Round 3+ Q8 ~/ e& ~* t6 S8 b1 c
7 vs 8 = 7 < 8
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4 ?2 J+ F% G& M4 ]! m9 f; T" cThe answer is 7.
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e.g. #3 假設13為較輕的一粒
9 E( `- q8 G8 C% z/ uRound 11 K) W& f) b; Y1 ^, ^3 Y
1,2,3,4 vs 5,6,7,8 = equal5 L$ b2 n' V1 ^) q* w& y' t
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Round 26 M# {3 Y, c* b' x% q/ [
9,10 vs 11,12 = equal3 R" d8 l* [  k/ P2 V

! F9 i3 V, a1 I5 d5 ~% n+ zNo Round 3
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The answer is 13.! d' j2 J9 H4 ^
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唔知我答得正唔正確呢?! $ @. T# y0 A3 P1 H" S4 n

8 g, F/ E+ d% g* D, z% m9 G+ u* a[ 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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1-6 vs 7-12- m8 W$ n9 K+ ~, ]! I. h# k
if 1-6 = 7-12     13 is fake
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if not
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0 o7 L- L+ A; fWeight the 2 time
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Suppose 1-6> 7-122 @( B. w5 A( K2 H5 Y% z* K7 Z
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1-3 vs 4-6 $ F4 c6 d. z, W
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Then Weight the Third
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Suppose 4-6 > 1-3! L& G) P- O$ ~3 i
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Just like the first Step
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! i1 M$ ]0 V1 l' T" T2 s. J4 vs 5
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- z1 x, G3 D8 O* z, bif 4=5 6 is the fake one
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if 4>5  4 is the fake one
! c" ~% |% h# H% l7 sand 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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2 G: H' E! e$ p8 L% @) ]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???! n. B& i  l! E- \2 g' i( s2 h

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6 x% N, v+ M' c問題第三步1 g' I$ K" x$ T2 f, q" P
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Weight 1:  1-6> 7-120 c/ ^" c  q% Q" j: q2 E  Q+ i' r* m
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Weight 2:  4-6 > 1-3
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9 f" s( h* U' q- w# I8 N: [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