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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8 s' ?" E) ]9 l. x! ?『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)。
$ r8 J# |& @7 L" @; J* }+ v5 W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？』" s9 Q) ~( b+ h. ^! ?

; W( z- X* {# i7 r6 ?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; T, J8 s& a+ \3 t" d) D9 e
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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- e4 O* R& i$ |( `9 G: i

' C8 p2 `( p, Z5 @* B  h; l[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
: _/ L8 @7 u' \8 ]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,
" d  f1 L, D3 w( }: m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。  s6 G: k- P+ n- r
13.........6 v5 M! N; L3 b

7 Y7 Y! I' l  h7 u! z[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:/ g+ ^8 B1 f! l  r  M

% L; B! J# j0 g& o1 K) X+ g我以前畫左個chart去答," x# i2 e1 l" T7 z$ r2 }9 R
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/ Q8 H: O. x. G& ~9 I+ W
唔識隱藏...已經諗到..

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) U( r$ ~2 o/ U& g$ l1 d4 C5 zsor !!!....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
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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:5 P9 ^$ g# c' _5 s+ R. g$ I; T2 k
相信e條題目都有吾少人玩...

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; z' |/ u+ ~7 j1 p5 p4 oPlayPlay, Let me know later who has the right answer and I will add points accordingly.# a. f1 X6 |9 Y7 @& P
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Thanks

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.
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Thanks

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) N& [( G( r* R( E. V不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
: }; b) j3 ?" h" b8 t! x+ G" s1-6 vs 7-121 x  Y) E8 _5 p- u
if 1-6 = 7-12     13 is fake3 J4 V  b( }1 N6 j9 G" v
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if not
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Weight the 2 time 9 c- O+ i- @% N( L) J, W5 h" W
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Suppose 1-6> 7-12
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1-3 vs 4-6 , c# K/ m1 T' f1 f& `$ _

/ X) c/ S# W! E* g. yThen Weight the Third8 l% i  @" N; [2 |3 ^& K; z  ]
3.9 s: F9 X' ]8 P4 i0 G. N4 g4 A( Z

1 q$ Z& U6 q6 L  J3 w/ vSuppose 4-6 > 1-3
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Just like the first Step
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3 x2 y9 }! F  ^, V4 vs 5
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if 4=5 6 is the fake one 7 a: p  |3 |+ k

) ?$ h4 X! R) }/ ?2 A9 S( Pif 4>5  4 is the fake one * C6 Q$ ]) a. a1 j, u3 \: h+ U
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and so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
, \: x7 U+ Y  C, C. l7 O$ YGroup B: 5,6,7,8
3 J, H+ j0 c4 |' J; N8 F% C6 e  }Group C: 9,10,11,12
2 L9 s! X- B! A! h5 @* Q) ?1 N4 gGroup D: 13
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0 }4 n# e$ P+ P5 \- M; BRound 16 N4 C. r/ i% r/ k, N
Group A vs Group B0 W- U) a2 \1 A& h! ^1 b
如A and B一樣, 即較輕一粒在Group C or D
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Round 2
# m. J8 E& l0 d. M5 t再在Group C拆成:0 W, i% O' h5 Z1 h2 `
Group Ca: 9,10
& ?, W( L# F7 y; Z) S0 }0 ^Group Cb: 11,12
. ^/ s; m+ ?) _" r然後再秤, 如一樣, 即13為較輕一粒.
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" ^1 t- e$ M6 `; p如不同, 即較輕一組有一粒較輕波子在其中,
- v/ s! |# Q4 z' F1 d要再秤, Round 3, 之後便知答案.$ ]' Y/ I5 B. h8 a

; F& ?. F; R2 R% O8 Me.g. #1 假設10為較輕的一粒2 ]* \- T  K+ T$ a# b& u# H8 A
Round 1# p  O/ h2 `/ e# u, H, j4 m
1,2,3,4 vs 5,6,7,8 = equal8 \! M# L: V' Y/ N) ?, ^
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Round 2
) @  x* B! U' w& F* ~) e9,10 vs 11,12 = 9,10 < 11,12
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Round 3# i8 b- d; H; t" H
9 vs 10 = 9 > 10
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The answer is 10.: U- R: k$ `6 L) v# g% \

  ?* x0 ~$ @( C9 ]9 x5 [( @9 Oe.g. #2 假設7為較輕的一粒9 O0 X" H  S1 z
Round 1* w$ p( ]8 V' h$ C+ H' _
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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1 j: H8 [% K- u2 \# x8 ]. T" Q8 }Round 2
$ q( E$ T4 b. J5,6 vs 7,8 = 5,6 > 7,8* S! j$ J' A, g$ Z  t8 O

+ ^, U0 W; Y4 QRound 3
' C% I! ~" P/ B' F" l5 h1 Q/ ?/ ^7 vs 8 = 7 < 85 q, w0 n) l- g8 t

0 s7 R+ G0 _7 }& c9 PThe answer is 7.
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* J1 ~% M$ k4 t7 ], ce.g. #3 假設13為較輕的一粒
2 c) u) C% y/ O- X' ?- CRound 1  ?, K# G0 U) [# {2 M( O' _
1,2,3,4 vs 5,6,7,8 = equal1 @9 a4 w& _8 \- x

4 n; m3 C* b+ G+ f0 NRound 2
1 w1 v- s8 w: [4 i" f; U- Q9,10 vs 11,12 = equal
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% L# T( `; \" GNo Round 3
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The answer is 13.
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9 g7 W) e) J" Z" e. `唔知我答得正唔正確呢?!
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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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1-6 vs 7-128 ~+ {2 m7 I/ C: [' A2 s' Z$ x; G2 n
if 1-6 = 7-12     13 is fake
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  L4 h1 I) D/ c- c3 E
: t. x/ S$ n" D" x( DWeight the 2 time , M3 ~% p, G; N4 O$ F

# B5 Y% Y4 C: {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
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/ C# N' M, N4 E: k( b- LJust like the first Step
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4 vs 5
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* w5 l0 M: q0 i- L, Uif 4=5 6 is the fake one ! i- R- b0 N( s# D" |
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if 4>5  4 is the fake one - L$ L1 M! n0 a7 {5 s
and so on......................

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/ u+ Z2 M5 t3 Y問題第二步
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$ i! K. v0 W  c. G9 M! F# UWeight 1:  1-6> 7-12
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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???
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2 T6 K, a3 v* t問題第三步
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Weight 1:  1-6> 7-127 ?( ], A9 S6 J2 X
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Weight 2:  4-6 > 1-3 2 ~: x% @. R- P) T2 e5 o
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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