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)。
6 v1 u/ V9 {8 ^4 X  g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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, d  Q2 q0 \1 @注意: 0 A. Z9 m' G; X: f' x
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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* R: O) v6 f. M
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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
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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:( \) R4 n& @8 I
相信e條題目都有吾少人玩...

5 X& I/ k- a$ r5 g, N3 _我以前畫左個chart去答,
* O& s0 R3 \' J: c3 J等我搵下仲在吾在
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* R* x  C4 Z9 I當日用左37分鐘答１２粒波子，差７分鐘才合格。" G. e# N" E, K
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:
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我以前畫左個chart去答,
# P" f  r: P- F, `# p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) F( Y0 W9 N
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
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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:
0 w7 _8 u7 m/ f6 I! S相信e條題目都有吾少人玩...

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6 Y$ B* [4 a% d) I* @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:" x2 g% W7 A7 @3 F

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& T8 D* w, t) \6 sPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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. k0 X, d, c! v$ E! d5 Q: u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 7-121 r0 m9 [3 Q- j3 W- s9 g  P3 T
if 1-6 = 7-12     13 is fake, l4 a1 a1 p' g" R. t8 L: u5 \+ _
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if not
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Weight the 2 time $ z3 o6 o( K8 h* _* Q. z1 ?

1 |4 T0 i5 i* H! B" q2 e7 p9 y% ySuppose 1-6> 7-12
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1 L: P9 u# c2 y9 d' T9 N3 g1-3 vs 4-6
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+ g* {- x9 R/ i! w% U  {2 `Then Weight the Third
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5 o9 j. K3 C& G) OSuppose 4-6 > 1-3
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  @* V3 R( w" `4 W* q) iJust like the first Step% x4 q9 l! F1 l3 X, p: g5 \
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4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one 2 N5 o8 @- U( P8 b
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and so on......................

hello1997

分3組4隻波子秤' k: B  n) `0 t1 ^4 T# u1 ~

1 [$ ~2 l1 B* A# J9 BGroup A: 1,2,3,4+ M7 o; ]4 x. w- P; L
Group B: 5,6,7,8
) q0 ~+ X" ]- |# m$ P# DGroup C: 9,10,11,12. x0 x- J, J+ U
Group D: 13
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. g* \+ o$ l8 L6 ~3 A% v! xRound 1
  j, \' N! v+ g; G9 yGroup A vs Group B
- w* |+ I4 F. _0 ]5 m) q如A and B一樣, 即較輕一粒在Group C or D
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Round 2  b' Y2 B" w$ n
再在Group C拆成:
2 @& Y! r7 I% y2 B* C' x! fGroup Ca: 9,10# n( D0 i5 t0 i$ b
Group Cb: 11,124 Q) T+ b8 I) [" R9 ?
然後再秤, 如一樣, 即13為較輕一粒.2 p6 A6 G; E. o: u  S% u( \
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如不同, 即較輕一組有一粒較輕波子在其中,
: N1 K0 G0 W& u/ J& I要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒
5 n/ i3 s0 \  f" [  i& |0 s8 KRound 1* V) G* U( p" d' I* d- l( H. n
1,2,3,4 vs 5,6,7,8 = equal
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Round 2: I$ h. a: S( K+ L- V$ d
9,10 vs 11,12 = 9,10 < 11,124 Q4 a0 t" n- Q# S2 K7 X

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9 vs 10 = 9 > 10
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2 V% R$ F' H7 L$ Y: l8 W. C8 _2 f. WThe answer is 10.
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e.g. #2 假設7為較輕的一粒
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5 d0 C6 e$ t; Q. Y) Y% t0 m1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8; h* ~+ H" @0 z5 z- D  F' l5 F9 @& Y
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Round 2# r2 `9 y! @# f. a0 ~! T
5,6 vs 7,8 = 5,6 > 7,8
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Round 3
5 L9 l$ m+ u* v7 C" z2 L7 t( f7 vs 8 = 7 < 8
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7 R+ G) f- K4 u) S" K! kThe answer is 7.
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e.g. #3 假設13為較輕的一粒
2 [( C# U/ D  N% u) M6 O2 ]Round 13 u. e! V0 U: e, V; W
1,2,3,4 vs 5,6,7,8 = equal9 T6 I2 \  O: U* j$ N' I0 B. s

" M, T$ v8 W" _2 m9 P: `Round 27 i# x8 ^1 E+ ?4 B& L6 R
9,10 vs 11,12 = equal
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No Round 30 E2 \& B( I+ v3 a2 G+ @' n( d
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The answer is 13." @0 @: L6 Q9 `5 V9 N5 e  r

) O- l6 w7 N3 w$ j- J唔知我答得正唔正確呢?! 0 f6 R& O( w1 I/ N3 C
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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:3 C  i4 {% ~0 h" q* r* h
1.
; f4 t" _+ p! T2 R1-6 vs 7-12; j5 F2 M- c+ q( w5 g$ ~' J* D
if 1-6 = 7-12     13 is fake
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. `0 r7 k8 B4 TWeight the 2 time ; U2 Z, k5 a1 M3 ]- v

/ b" `" ?( w2 V' M2 k0 tSuppose 1-6> 7-129 z; X6 L; z" ]. @& ~: N* F
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1-3 vs 4-6
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% c& E- i; k! R* P" fThen Weight the Third8 c3 g1 R) k0 e3 C
3.
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Suppose 4-6 > 1-3
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Just like the first Step4 U8 |6 J' U5 I4 U$ }: {1 a
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4 vs 5 ' K& g; r. ^* U8 P! p
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if 4=5 6 is the fake one
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9 h3 h3 M8 f1 T! B) l/ g0 \if 4>5  4 is the fake one
8 H( I8 j1 A  x; Y  n# |and so on......................

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問題第二步3 f/ f3 \2 v: a
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Weight 1:  1-6> 7-124 M  ]9 v& \7 k+ Z7 E% E% Z) l: A% s
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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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問題第三步
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1 o# A1 b, J4 u/ fWeight 1:  1-6> 7-12
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. i3 {2 s1 Z9 M& |6 ^Weight 2:  4-6 > 1-3 9 X$ {+ U% j. J/ ~$ L4 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