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" ], X- `/ y& z

) D# M* e0 m, ~& t7 t$ W6 V$ A& F『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)。/ g& b3 n% n' y" b! @
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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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! Y' ^5 P3 f# {  U2 I4 P2 `
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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( L! }2 M% X: k' K
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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:! B. m% L% h. ]* c/ ~
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,
7 X' M  D8 }5 C: Z7 D9 _( j等我搵下仲在吾在
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  S# o5 l! {! C3 X. r, v1 o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:
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我以前畫左個chart去答,! \. ]% L% S, ^  T: ?0 [2 i4 u$ V
等我搵下...

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8 C! G: l0 x  R+ F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:" ^4 H; r1 a/ S0 E% E' J
唔識隱藏...已經諗到..

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3 T/ Y4 d% |" a4 |, q- Ssor !!!....e加改左+ p  m) C8 u0 c' [! i
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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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0 S4 r) C8 {4 _+ h5 Q  ~' t[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
* o0 a0 E! X, W6 L/ X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.  i+ v; d6 c" C/ Q% p5 ~

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playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:' u1 O: V, h$ y" `0 r( ?2 C" ]9 q

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.1 ~' Q6 L8 F: u. w/ F
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Thanks

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7 R7 V) w3 u6 Y7 R, E' ~不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
. ]- S- D' w/ j% z1-6 vs 7-12
0 e8 B! l' C- `$ V1 |. f" jif 1-6 = 7-12     13 is fake: Z: ?+ J' g" ?
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if not
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Weight the 2 time : e+ ?" U) F! i6 k' A
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Suppose 1-6> 7-12
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1-3 vs 4-6 7 e1 c; j1 _/ T8 |
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Then Weight the Third7 H% c5 J+ [5 j8 a$ o! ]. i9 v2 f' ]
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Suppose 4-6 > 1-3: D0 \! j2 }0 `" s* I
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Just like the first Step+ o( B# M1 w0 p8 ^0 K
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4 vs 5
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if 4=5 6 is the fake one + E- e/ G6 E) @8 r7 V! x

  {: R# a! W, [if 4>5  4 is the fake one
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  ~5 d9 U$ C9 y, U  ]and so on......................

hello1997

分3組4隻波子秤" R7 F: ~2 V1 r3 H

: L9 O7 v: e, \0 DGroup A: 1,2,3,4/ E& ]3 Q: x7 i
Group B: 5,6,7,82 {5 c) Z# I! B& u- c
Group C: 9,10,11,129 m% D: \4 l; P+ l1 \
Group D: 136 T! I9 @$ r7 {( t3 K* Z

- \& H, I& ]6 U# xRound 1
, [3 v" ~- b% |Group A vs Group B5 N2 y5 I' L3 K1 Y9 e
如A and B一樣, 即較輕一粒在Group C or D
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7 ]# D2 [% p$ q2 R" JRound 2# d. x, r7 L. A7 w/ y
再在Group C拆成:3 _5 @6 g" Y3 S
Group Ca: 9,10
- U0 D/ Z1 j* z3 Y  C2 [Group Cb: 11,12
4 ?7 y: n2 c& W9 X9 S" i然後再秤, 如一樣, 即13為較輕一粒.( s! e. d: h  e
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如不同, 即較輕一組有一粒較輕波子在其中,
- w& v+ A, |' T; O; u1 v$ o要再秤, Round 3, 之後便知答案.. K6 d# Q2 `5 @
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e.g. #1 假設10為較輕的一粒7 B/ d7 I6 j8 n" X2 U
Round 1
8 U1 |2 h$ {% f/ T0 F& j1,2,3,4 vs 5,6,7,8 = equal
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+ d8 h. h% Y# e9 A) qRound 2) _% V, B- X! D& o) d: P
9,10 vs 11,12 = 9,10 < 11,12
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! G. M$ O. y* `5 T( T- q3 P: l/ _Round 3/ p1 S' p) e3 R& T) |) ]4 ~
9 vs 10 = 9 > 10
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4 c" K' h0 z  s7 w3 N8 @4 TThe answer is 10.) Y% x( d  x" j! }5 h: C
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e.g. #2 假設7為較輕的一粒7 Z+ ?4 W6 G, O  S% ?( S: k! }- }) z- V
Round 1+ Y! Q  z9 [; G' [* K$ n) h3 N0 i
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,88 n' [; X3 U0 W  J$ H8 x

) X& S5 Q4 r+ U& J9 `( m) j: D) B7 KRound 2
$ ~0 R! e4 Q+ {5,6 vs 7,8 = 5,6 > 7,8; [+ g8 i6 o* _7 a( r/ I! ?* s( I
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Round 33 k/ O7 {! y' C2 A. U% ~0 f" \
7 vs 8 = 7 < 8
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' K0 U* W! v8 @; P) ~The answer is 7.# J: u1 @" t  o! E8 T! _) Q6 r

7 w3 S9 p+ U8 o( c0 Be.g. #3 假設13為較輕的一粒
! w4 @" E# O0 f' R+ W# J0 y9 ~Round 16 U: d! `' n2 B6 Q6 r" m
1,2,3,4 vs 5,6,7,8 = equal2 O4 ~  {. Y! z/ }0 k2 K6 O

4 s9 Z) X2 ~- r+ e5 a, cRound 2( }9 ?+ b1 k. t! {! m: S3 ~* T
9,10 vs 11,12 = equal& {0 \6 Q' F' S4 T; C

) s' T  w( z7 B8 N! n9 `0 V+ xNo Round 3
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! R6 o3 F% R- s2 aThe answer is 13.+ Y! e5 O0 `& q/ P5 e
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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:# E9 Z" I2 _5 B/ Z1 B5 _- V3 w- Q% U
1.
4 F4 o( v. }% H/ N: X2 N+ G1-6 vs 7-12
7 M, T9 R6 ^8 b4 m+ w2 k1 C' ?if 1-6 = 7-12     13 is fake+ ?; X1 W& o5 v& l9 X' j5 _
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if not & C4 z' |: b6 w0 r5 B3 o6 G" v7 z
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Weight the 2 time
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Suppose 1-6> 7-12
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: s5 D, y) k, }4 m1-3 vs 4-6
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+ l2 U9 q" S, c: L& ]4 L7 |( wThen Weight the Third- X0 v; B, {9 N: J* o
3.
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Suppose 4-6 > 1-35 W+ T. a9 S) |  w# E# d

7 |3 i7 m% T/ |Just like the first Step$ a1 l- I: o3 K7 S: i, H+ t8 t! Q
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4 vs 5 5 m* K3 n8 R# g$ Q
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if 4=5 6 is the fake one / F: u0 f7 ~3 q& [  Y- Y( ^+ J
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if 4>5  4 is the fake one ! K. J. p9 ^) @  H  ?: a+ t; n
and 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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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-65 [, g2 P! J4 ~7 I2 v% w

3 t3 b. S* J$ M; `0 f6 h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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Weight 1:  1-6> 7-12
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, ?9 r; \8 S  @8 |9 s6 H) ]% ]; uWeight 2:  4-6 > 1-3 ' U% R" j: v# r4 J

- V# x( c1 n! i/ ~. |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