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/ G: T# o6 ]  N3 c8 x
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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)。
% ?/ T* j/ T1 S  x. |7 Q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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. O' O3 j) O- A) b' \9 s$ U注意:
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* V0 O9 z+ I0 U, h" b2 T/ P1. 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: v* e- A$ X- _7 w
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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: p( {, P4 ^" N* i' W

! E2 U9 t3 K* X9 f4 M0 \9 d7 @" j[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:  s& R' `- z! P4 Z
相信e條題目都有吾少人玩...

8 j) u1 L0 V, N" b2 G我以前畫左個chart去答,
1 p0 {( c( j: o8 Q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。* x0 |; n& x4 c
13.........
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, A, W# ]5 r8 v[ 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,8 I& ^4 h7 _& Q# F
等我搵下...

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& W. e1 T, _/ @% g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:, F9 ^! R0 c; j% f  }$ k# a
唔識隱藏...已經諗到..

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2 d, j+ a8 V- A. o% p  |sor !!!....e加改左5 I9 v2 L! ~6 v( u/ w' z3 Z1 ?/ T

' q5 N# f4 c, j3 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" p+ e5 d$ j; P$ G/ C
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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:
8 ~4 X2 K3 _: ?& ]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.. T% n. U+ X' P4 x
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:& U  N3 m# E7 P, D. T! D

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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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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
! H( Z% J/ O0 q1 R1-6 vs 7-12
* [! a2 i9 R0 u* R$ @( N' y7 bif 1-6 = 7-12     13 is fake
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if not 4 K' F! k2 B3 M$ v" L& i3 L

9 Z8 D3 A) t- @" XWeight the 2 time : _9 d$ J" Q7 W2 Z0 h; \# }# |

( _. D! g$ N* X0 A3 nSuppose 1-6> 7-12: `1 C2 ^( J( o2 H9 y. X0 w

& v8 ^( d& g* |1-3 vs 4-6
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Then Weight the Third
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9 Y6 }1 @5 ?1 H6 M0 HSuppose 4-6 > 1-3' E, I7 {* m7 L9 o# p+ V
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Just like the first Step" m7 i( q7 M2 H, C! M, R& K

6 w( y$ `. B" O9 ^1 U/ v4 ]4 vs 5
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  V" F. q2 @$ X& N9 B1 @if 4=5 6 is the fake one
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if 4>5  4 is the fake one - I, n$ k8 d2 _) J* I3 [2 L$ U
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and so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,46 ~/ R! n, f6 Q5 r! b$ x
Group B: 5,6,7,8: P' W" I9 m! Y9 ?/ g) j
Group C: 9,10,11,128 Z* }5 e7 H3 \
Group D: 13
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Round 1
; r2 C% j$ Q0 a# t( ~4 ?Group A vs Group B7 l4 n! N  P; Q" f! p. Z
如A and B一樣, 即較輕一粒在Group C or D) A, n5 c% Z( a5 w
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Round 2+ Y% X% E6 I3 Z1 d" H- \- g
再在Group C拆成:
0 S6 d1 A) ^$ h4 w& ~. p0 P+ GGroup Ca: 9,10- j' H$ i9 Y7 `+ g9 e2 |* C
Group Cb: 11,12( ^. i! r9 x$ ]* H* k6 r' x$ B
然後再秤, 如一樣, 即13為較輕一粒./ c! v) s! p! t* G8 r
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如不同, 即較輕一組有一粒較輕波子在其中,   q4 S- w5 }8 L9 @
要再秤, Round 3, 之後便知答案.
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$ K5 b2 Y: A( t2 Q; M3 a5 v& @e.g. #1 假設10為較輕的一粒+ k6 x0 t" E6 @( e9 a3 U1 r
Round 14 y, h& V( C, N1 W9 \
1,2,3,4 vs 5,6,7,8 = equal; g2 S( D6 ^& U3 \2 y) z+ T
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Round 2
  d$ \; M3 {% c) x9,10 vs 11,12 = 9,10 < 11,12
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2 S; s/ P; O/ jRound 3' t: _. _0 j% q4 u9 c0 e9 e) O5 q( V
9 vs 10 = 9 > 10
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3 H" k$ r( m" k# t4 J1 A( g+ |The answer is 10.2 I( j3 d" c! D) l& r
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e.g. #2 假設7為較輕的一粒
( v3 Z+ D- k2 X6 U  I; q' D9 j% K2 uRound 1
9 s8 X/ U; ?' c  H1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,83 u; m, G! _6 J2 T/ V5 Z, i2 E# a" L3 F
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Round 2
' P! T1 m( T" `8 f5,6 vs 7,8 = 5,6 > 7,8
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% G! ?) _* y8 F4 zRound 3
: \# `+ g: l' E+ j1 b8 x( z7 vs 8 = 7 < 80 s$ L+ h+ |+ J! X- V

6 w* e  X% J$ B) t2 @& T% [The answer is 7.) M# Z1 e$ G  {5 P9 W" f+ \' r  @

- I9 m9 o9 I0 E* U9 p. j0 \& c8 N/ Fe.g. #3 假設13為較輕的一粒
' v# R9 f4 H! s  R5 t9 _8 YRound 1) n5 ]; n$ E' I1 ^0 j, w. |" _
1,2,3,4 vs 5,6,7,8 = equal9 A6 s! ]* g$ f! j( {
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Round 29 ?9 l6 `. |/ Q  u; c
9,10 vs 11,12 = equal6 O2 `3 C$ P! r: I: U8 y$ J" k

( X# j' I  J8 z& @! i0 y3 [No Round 3
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  f+ n- {% u4 {" ^3 D6 M. IThe answer is 13.
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唔知我答得正唔正確呢?! , F& ]5 \0 l' }

% b9 ]% Q! G( o7 C: K6 [3 ?[ 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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! D9 \3 r8 c& b; S# O1-6 vs 7-12, O* D" O+ `7 P, W
if 1-6 = 7-12     13 is fake) x) l# a! r( a% S( v- |
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if not 0 Z8 Y& m8 G; w& W3 t
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Weight the 2 time ( ]% Z' d. J; M, g% P' }8 V6 T

% b; k. l' a0 nSuppose 1-6> 7-12- V$ ~3 L4 ~: c/ S3 o2 I' G  j0 U

" T  X; V0 o7 I& i1-3 vs 4-6
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- I& @# ?; B/ JThen Weight the Third( L2 Q' m) Z; D' U9 W
3.
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3 Y7 {0 G* {" Y( {" Z7 z% i- }Suppose 4-6 > 1-3
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+ D: w5 X, G4 T9 G( X; cJust like the first Step+ [7 M, f9 D+ i2 {
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4 vs 5
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# M( E3 S5 o! B! fif 4=5 6 is the fake one
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9 n2 P/ u9 i1 o) I8 t$ @# n( S: Qif 4>5  4 is the fake one % D& S2 S5 P/ _" w1 r' m; f# w
and so on......................

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問題第二步8 V# }8 o  o0 ?  F/ r: ?7 t

6 P# U1 N& ^) a- g( k  `3 B, lWeight 1:  1-6> 7-12
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1 m* k1 d% y; V0 U% W6 `Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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% k; {0 l% `, q8 K* D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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, b% }: I6 q! X8 S" i, u. d' u5 u7 mWeight 2:  4-6 > 1-3
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" Y) }2 c$ H1 I7 x" Z; A. g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