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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  R/ ^1 R! _" `7 ], @' O$ O' e5 Z3 {『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)。& J4 I8 W5 h7 X+ f: n* i  v
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？』1 W$ u# d3 F6 u9 y( |0 l2 G

* X8 k9 j1 N( O6 C, ^: s0 B注意: 9 \" R3 z+ M. n+ p3 ]
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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0 w! i  j" w$ |. s
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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:
/ }$ m* x6 ]" S$ ]2 W4 j. F相信e條題目都有吾少人玩...

/ ~( O9 t% G0 N* Q我以前畫左個chart去答,
! c5 y. T  P* x0 j等我搵下仲在吾在* q, g8 H) e# J1 [$ D- z" J
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當日用左37分鐘答１２粒波子，差７分鐘才合格。. G+ Q) D( w4 ~6 c+ ~
13.........  p5 h8 ?. X! Q& y( p' x

. W$ R8 H/ U" M3 h7 m[ 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,
# A7 r. I6 r9 Z% H# E& j8 M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:3 q! z( {0 x' ^
唔識隱藏...已經諗到..

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4 O1 w- |& j! [; X& Xsor !!!....e加改左2 }& b: q1 U( `- _1 X

$ M/ K. D7 R' w" l8 p- 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6 q3 h& r" U- v" s5 B
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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:, c8 S: n" U- ?% y6 I
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.4 K* E& n5 X, o

0 X6 ?7 O, t/ ]! U6 y, ~& QThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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- p& ]2 S9 L" O6 U7 x0 gPlayPlay, Let me know later who has the right answer and I will add points accordingly.( |) s9 m  S$ z
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Thanks

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" i0 Z+ [+ _. b9 N2 q不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
5 v) i2 G* O* b" D1-6 vs 7-12
( k1 u% c2 U  f: Gif 1-6 = 7-12     13 is fake. m% V( a2 Y# W1 ?+ l+ a! U) B
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if not ' g( j* W! x% i- b
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Weight the 2 time 9 Z/ P' b% ?2 C- @9 O; ^
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Suppose 1-6> 7-12
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1-3 vs 4-6
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# Y- I: }4 x/ C0 d  xThen Weight the Third9 [  [6 y9 U6 X% V
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) x3 I# s& F# JSuppose 4-6 > 1-3
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Just like the first Step
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4 vs 5 * Y- T/ R6 K! t3 C$ e7 P  l- F
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if 4=5 6 is the fake one
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: \& Z; _5 V' bif 4>5  4 is the fake one
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. _0 Z' V" U1 l. O  R7 ~/ kand so on......................

hello1997

分3組4隻波子秤. v7 k! J& d+ d0 Q' O: L
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Group A: 1,2,3,4
4 C, L: F& ]' H* @Group B: 5,6,7,85 x: z' ~) \; a; p' _2 E: N
Group C: 9,10,11,12& w0 t. \1 U) g/ v
Group D: 13
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Round 1
5 t6 {! ]3 l0 @: w$ M2 RGroup A vs Group B
  M; H9 t& w( a, J8 K如A and B一樣, 即較輕一粒在Group C or D  ~+ q% K) k/ \- o& Y

0 w9 ~- s# M' X3 sRound 2
. d& T( i( r9 b  u+ @0 [* s再在Group C拆成:
% ~0 c2 D8 y: y/ }- g$ QGroup Ca: 9,10
! |' O( G- C7 Y) T+ G1 R' B1 b1 rGroup Cb: 11,12/ B5 D' {$ Y9 Q3 j
然後再秤, 如一樣, 即13為較輕一粒.
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) E1 p: h0 W! Q0 f- G8 f如不同, 即較輕一組有一粒較輕波子在其中,
& ?0 Y- P' r( @! b要再秤, Round 3, 之後便知答案.
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7 N  E3 C- G( }e.g. #1 假設10為較輕的一粒
+ g2 j6 m7 |( @' Y  V8 A5 l" dRound 1# j, [; X7 L2 P, Q$ s( g
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
3 f0 ?, ^' O4 L6 q$ n; o9 f# B9,10 vs 11,12 = 9,10 < 11,12
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Round 3
" R1 k$ b% u' s6 X3 N3 e9 vs 10 = 9 > 10
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The answer is 10.. r* g, ]. _. m  ?4 m* \0 k- ~

3 C3 E' _) I5 ^6 U- r$ z7 T" ^e.g. #2 假設7為較輕的一粒
$ G- {7 d8 F! F7 y" l, NRound 1
& u- C% Z) ]4 Q6 [1 U" N( z) [1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2# f( {& M6 e! b0 l/ B4 {
5,6 vs 7,8 = 5,6 > 7,8
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Round 37 I0 b6 ~/ Q1 V
7 vs 8 = 7 < 84 l# [! z9 J( c" P' z- i6 ]
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The answer is 7.
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1 ?+ N# A' ]" D. oe.g. #3 假設13為較輕的一粒
' H% ?+ c) [& H; ?$ T2 `9 l$ FRound 18 y; I. }6 Z) Q) J; n% |# l0 {
1,2,3,4 vs 5,6,7,8 = equal  D/ K; _9 `' S; v: o

% L$ k1 v4 Q3 f  m* ?Round 28 n; s- K. J! J! [4 p4 A2 u  |
9,10 vs 11,12 = equal) G# f# i3 y% Y, K+ ~$ L* W/ O

: X5 h/ _2 T+ b: G8 {No Round 3! x" t: _; Y- T" t

0 W% Z: O+ p9 JThe answer is 13./ V6 P* S% [. G3 S& P8 a3 U/ Z) i
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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:1 u6 ?3 d6 H( k4 [1 G# T7 Z
1.
. M: ~2 n2 \$ C4 L' x1-6 vs 7-128 r3 r' C! A* ^8 b: A2 x
if 1-6 = 7-12     13 is fake% h# C5 ~8 m, q! a& e
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if not 4 t& l/ E6 y) _) R, m' V

# y  g" ^2 |/ ZWeight the 2 time " O. V% S. \  I9 |: M9 j4 w$ B

; [% A7 ^5 Y% I9 U1 |4 \Suppose 1-6> 7-12& e0 N, q: L3 d; g) }, y/ e! t

# C' j/ d- Y% K( C- n( z1-3 vs 4-6 0 V" V4 B7 y; [. w  b

2 k: H, ~" Q- P: q( a9 h( S" OThen Weight the Third
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Suppose 4-6 > 1-3
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* Q2 u% k$ |2 b! F! D# K6 FJust like the first Step
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0 V9 }' T; B! y; b+ s; e4 vs 5 ( E, U# o/ c6 C/ n$ J3 q, S8 F
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if 4=5 6 is the fake one # M% B1 c5 l. z$ B* Z0 L

! h& A* c3 U2 F$ E& [( n$ V# Fif 4>5  4 is the fake one 4 B7 r. a3 |4 e
and so on......................

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問題第二步! C( Q  ~* ~" C, Z" Q# n
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Weight 1:  1-6> 7-12" a% N. S' I. {2 J" O8 h

) m) l3 D" f# J; YWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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- W- h8 S: L+ \8 f9 d你第三步点去搵 7-12 边一粒???
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+ j3 @- C2 p9 J2 \1 W問題第三步7 D) K9 D* P; T! |
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Weight 1:  1-6> 7-12' C9 f7 W1 [! k. ?1 y2 N

* \2 K  I" V, Y! h0 IWeight 2:  4-6 > 1-3
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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