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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, K/ ~& g# I/ ?7 H: ]8 }9 C『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)。
; w7 Z+ y' a4 T( |& ^4 O$ 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？』  i& j! ^& W& k; P  Y. K

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) ~" ?& G# w3 L: e9 K' q8 \% G7 `( t1. 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2 E6 U# Y8 h% D( j) z7 G  Z% k0 d: z
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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:
( u9 T1 G3 \; l8 a. W相信e條題目都有吾少人玩...

0 K* `" A/ |& Z0 Q) i我以前畫左個chart去答,
  d9 Z2 E1 D. ~/ |等我搵下仲在吾在# |$ H# U8 E  m/ O! l( c+ H
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當日用左37分鐘答１２粒波子，差７分鐘才合格。: B# ]" S7 z7 s7 l3 m1 r
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:" W( G3 H9 K! t! h
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我以前畫左個chart去答,9 b9 ^8 p* T  |6 U2 g
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:# {9 W8 i/ J* Z& s0 u8 d# |
唔識隱藏...已經諗到..

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sor !!!....e加改左/ ]* }! e, M! r: g( W5 ^# J% Q) g
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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" E% l  q0 m' Z2 j

% K( M. F4 W% v, n# N/ q* U[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
! s- d# a) h1 A相信e條題目都有吾少人玩...

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  Q0 o' ]1 X5 p$ p; v8 ]PlayPlay, Let me know later who has the right answer and I will add points accordingly., Z" P( X7 n) V" @# P" z) E# W

' M/ U) n% Q# c8 f' jThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:6 ?  l( W. v% |& E) K  q
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3 B* @/ R" s+ o0 A; {PlayPlay, Let me know later who has the right answer and I will add points accordingly.( m5 }1 V6 L* Y5 o: Q. [

" P, d( i; T( g5 E$ P9 _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

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1-6 vs 7-12* a3 z$ P- j( d  X: e2 T0 a
if 1-6 = 7-12     13 is fake9 I5 J7 s; B2 \! p

" U# t& m0 b, U! `1 g2 d( U3 R$ x) nif not ( F: w+ B6 p# H2 D7 v8 p

0 o" [- H/ g9 A. n, t2 T- KWeight the 2 time - B0 h5 D1 a9 G1 M: c+ z% V
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Suppose 1-6> 7-12
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6 r$ e; {7 t; Y% |# V! W/ \1-3 vs 4-6 ; ?1 ]* X5 p; ?* @
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Then Weight the Third
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  D# L. v% A- S. T+ `2 g3 V/ XSuppose 4-6 > 1-3
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9 w6 O1 n2 L( ?. F! O: P' IJust like the first Step. u) L2 d4 L( S" @6 r

: i8 g6 B7 q* T. @! T, Z* s" K# y4 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
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" Q( M- t5 N& d4 B# ?1 W. z" |and so on......................

hello1997

分3組4隻波子秤6 e+ T$ v3 z' D, w+ W
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Group A: 1,2,3,41 }+ ], o' b3 ~0 z7 m) r, D
Group B: 5,6,7,8/ |/ ^$ n# x2 Q
Group C: 9,10,11,12
/ I3 T2 A3 }! r2 O" s) WGroup D: 13; N7 y# G* a. C* @

7 Y2 |2 D7 N, v- iRound 1
: H& X2 w9 {1 d7 p& a( ~Group A vs Group B& L" v( P5 O% X, Y+ V% M
如A and B一樣, 即較輕一粒在Group C or D% {0 w# y; o% g  A
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Round 25 `. |7 L- u# k( W
再在Group C拆成:) j6 v/ U% u* j7 P. Z1 G; s
Group Ca: 9,10, G7 l! a! K4 z3 J
Group Cb: 11,12* j! {; y+ Z3 S+ F( b1 h
然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, / m: I/ u. i  o7 U7 z
要再秤, Round 3, 之後便知答案.0 e$ M: {4 f+ b7 \& d+ P* @+ k) h

  p2 J7 j; s9 Y; Q9 G# ]( X" xe.g. #1 假設10為較輕的一粒
8 ?! I  i* a. M$ ^2 x& t1 b$ ZRound 1
- V' x0 s2 j. V# J) O- o. @7 Y1,2,3,4 vs 5,6,7,8 = equal
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Round 2
5 }; U6 l2 H! I9,10 vs 11,12 = 9,10 < 11,12  a! F7 Q* R+ G( B5 n4 o
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Round 3% k7 m2 K* J) B: `+ X9 D( k
9 vs 10 = 9 > 10
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The answer is 10.
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, v9 F+ v5 N  R, g* P" j( Le.g. #2 假設7為較輕的一粒
) L  w; y' I6 {  A4 eRound 1
! V, y. i/ S4 [2 N/ ]2 X1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8# ~: h- l* c. z
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Round 2- V+ `3 Q8 O1 Q" ^  M* t
5,6 vs 7,8 = 5,6 > 7,8* g. q8 g) N7 M' x& _' G! P

% f# @4 B1 [: g* M, Y8 NRound 3
9 i+ D: |& B& b* n- @7 vs 8 = 7 < 8, o2 T! r! R. ~6 H: k4 ~

3 G, w7 P7 \8 N5 B: bThe answer is 7.
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e.g. #3 假設13為較輕的一粒! R8 q% e- R% T  m; n
Round 1* Z% x) _, X2 O
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
$ I6 D) f1 D4 \  W$ Y" T5 S3 b, p9,10 vs 11,12 = equal
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No Round 35 X6 a* |* Y2 \2 Y; J# ^: _

1 j* U$ Y( e! W+ d9 FThe answer is 13.
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唔知我答得正唔正確呢?!
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2 Q9 a* Z+ _3 w4 x  @[ 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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9 d$ c9 j6 Z, m* g, B1-6 vs 7-12
" p* L1 f# v, a: X6 V& W7 yif 1-6 = 7-12     13 is fake+ `) C# v) h6 Y) i' [4 j  C
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if not
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Weight the 2 time 1 }  D# t; w# Z4 _
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Suppose 1-6> 7-12  ?# W4 u1 ?* j! `' _

6 y1 ?, `9 P6 W, a4 x3 R1-3 vs 4-6 6 l( L% ~8 D6 L" w/ d

5 Q* j2 j. v& W* QThen Weight the Third
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2 b7 M! r% o6 S5 x  `Suppose 4-6 > 1-3
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$ M4 d" G* s. ~, d6 UJust like the first Step
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3 \+ @5 \0 ?; z4 vs 5 & C8 }+ a- ~1 I( G1 a
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if 4=5 6 is the fake one # v( o) }) @, I. w) K3 T! m2 Z

: [, k1 s* {# Q( Eif 4>5  4 is the fake one : I9 a+ A, G5 L4 t( N  z$ j/ \; B
and so on......................

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問題第二步- q( p- B! y+ C# a5 `: p5 F

- y$ b- ^* d9 Q7 s0 H: ^Weight 1:  1-6> 7-12
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5 e5 e/ x6 B' o& h3 O  x5 Z+ CWeight 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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========================================
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問題第三步
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Weight 1:  1-6> 7-12
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6 v* l! [) q' E9 X: nWeight 2:  4-6 > 1-3 # y7 R7 o8 D8 [$ V& D) h/ Y
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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