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# `7 F  M( t" G5 _

: o6 T0 |% d4 |2 A0 l0 n『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)。
' y. \& Q+ r) k1 [& S* Y& j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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8 P* O, D( Z- V, s. x! V8 ~9 q注意: 7 I; U6 p3 {4 F3 ?3 N3 b  F8 N2 [
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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1 U" r" Q3 |# n* C. M5 u

" d+ Q7 J" j( T3 \6 v2. 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8 I: j9 M* k6 v" |
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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:
- ]6 G/ }& p3 }3 I* l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,
0 E7 P. r. E1 V& M# @6 S等我搵下仲在吾在( b5 c% x: Z) r0 O4 v2 ^& x* M' F
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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:0 |; _2 `8 h* Q: t" h6 H& \6 h, _

3 a& D, I, ]+ z我以前畫左個chart去答,: x) C, q' c8 o* ~
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:
" d/ w4 J0 b* V7 g: n) ~/ d# I唔識隱藏...已經諗到..

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sor !!!....e加改左
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" J4 p( f% K( W( q' A) M2. 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# G- w# s* Z3 Y5 _
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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:
) w: L. w2 W3 E9 ^: ~) a9 |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:
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: ^  c+ J1 c0 R9 W" k7 ^PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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' Q9 ~& {: @, G1 V* _  C; oThanks

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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
! K0 Z( @: ^8 Y8 A- b6 g7 r" {9 J/ y5 r4 r+ tif 1-6 = 7-12     13 is fake5 i+ w! d2 P/ [4 ?8 }/ A3 m+ [
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if not
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! _( `# r# Y& ]/ i  L+ }; qWeight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3+ u4 m- ?4 ~; {3 g) u% }

4 P, P& f; G8 y  l4 ~9 KJust like the first Step
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4 vs 5
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: i+ N3 _) `, A5 ^if 4=5 6 is the fake one # x% F% `! a3 l9 W

; N+ s+ h$ \( E5 Tif 4>5  4 is the fake one ( B7 r7 ~: \5 l/ d
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and so on......................

hello1997

分3組4隻波子秤
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2 g$ ]& ~9 y2 C- h/ T9 LGroup A: 1,2,3,4
# g8 R1 U" j0 o+ b# p" k* hGroup B: 5,6,7,8
0 {7 U1 @  B5 d2 Q+ F. N& ZGroup C: 9,10,11,12% j3 L- d3 n8 A" x9 ?" m
Group D: 135 w0 n' M6 _1 K+ W/ R
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Round 1# \5 i8 o7 K$ K1 _, a: e
Group A vs Group B
; H* ?3 ^" i. e* P4 G- V, B4 ]如A and B一樣, 即較輕一粒在Group C or D4 j. U& @' T1 b
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Round 2+ Y# M9 k& D! o2 Q
再在Group C拆成:; T7 E( u9 r1 ?" L
Group Ca: 9,10/ [# }+ s. O0 n
Group Cb: 11,123 W( P. W" p1 O, F2 e
然後再秤, 如一樣, 即13為較輕一粒.5 J/ c* {% D' g4 O
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如不同, 即較輕一組有一粒較輕波子在其中, + _4 ^' W* |. }6 B- B( H
要再秤, Round 3, 之後便知答案.
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5 q* y, ?7 s* U$ _e.g. #1 假設10為較輕的一粒) `, @! _. p5 J
Round 17 z3 z; x' n6 R2 a
1,2,3,4 vs 5,6,7,8 = equal
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9,10 vs 11,12 = 9,10 < 11,12
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Round 3
# c: R  w" I  @: i! l$ a. S9 vs 10 = 9 > 10
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The answer is 10.; g8 A- m0 L9 ]7 P7 u5 e
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e.g. #2 假設7為較輕的一粒
9 A; T* V; k: a2 G  zRound 1
( l3 i* D# J: t: t1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8, {9 ~) R1 H7 C

8 p# y! s' |5 |; KRound 2& I1 g4 x) m# u+ Y) M8 ~2 ]( U! ?
5,6 vs 7,8 = 5,6 > 7,81 Q$ \$ ~0 u3 b% l
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Round 39 z6 q, d/ C3 G; x; M
7 vs 8 = 7 < 8
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( N! \( T: f4 t/ I. vThe answer is 7.
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e.g. #3 假設13為較輕的一粒
5 X# h+ d9 |9 y9 }Round 1
& h( H9 d1 c/ y# W+ @: b; y1,2,3,4 vs 5,6,7,8 = equal4 P8 Z  b3 j5 a- T9 B

& K* M1 y% t) E+ p1 |3 y/ XRound 2$ _9 y+ S1 W+ b0 p. ^$ C
9,10 vs 11,12 = equal. l" |& K3 D0 C  e3 t/ R3 s) B
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No Round 3
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9 l- a$ V' _: {3 h) p' K$ @) |The answer is 13.) _1 I( A3 G) M
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唔知我答得正唔正確呢?! 3 s9 M! I+ ^# \% s9 A
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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:. _8 r( U" g) r  H/ |9 {
1.
' w5 w- n+ r( s' w1-6 vs 7-12
) D# c) i* B! h6 m9 }( ]" r7 gif 1-6 = 7-12     13 is fake2 D4 h1 w& s$ Y1 g2 @5 k$ Q* h# j5 R+ z

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Weight the 2 time , d' m" p0 Y  {) _! R: m5 x& h
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Suppose 1-6> 7-12: j; B+ l" Q+ P! B( C( p

7 g2 [( S. r- c6 Z, _# y$ Y1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3
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0 e" z/ d- _9 @% u, WJust like the first Step% K. H( b0 _! s1 Y* }
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4 vs 5 7 m! |2 W" G5 o# o

! D( H! ^3 s4 ?if 4=5 6 is the fake one   `8 Y; E4 D! G6 Z: @. f/ R
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if 4>5  4 is the fake one 5 L. y+ T; u$ Z9 D& u
and so on......................

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問題第二步
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" @# x$ B5 d' e9 A; TWeight 1:  1-6> 7-12  j9 a1 x8 ^$ y& g# [) F
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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$ {2 E& ]- X# s7 w& j你第三步点去搵 7-12 边一粒???- W' S3 u. x$ D1 d/ T6 ?7 C

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問題第三步* A! l& c4 m0 c

* O& u8 }, g9 P8 Z% q0 x0 w/ r1 S" D" mWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 # \. C# _3 N0 g+ N$ G
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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