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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: {& W" _) W& V( _3 G7 s- q" k『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)。; Z- t& m" O, |
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: 1 c, w# o/ |( T+ J

2 ^. P6 _" _% e' W0 h1. 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
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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; x; Q/ X0 k' l9 x4 ~

/ C( \5 k4 R4 Q$ G[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:4 U) x! M& ]  W6 X% t2 k- G
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,
0 d: O+ }7 B9 Z/ D1 y9 ~等我搵下仲在吾在6 E, w. r" `/ U/ H, t

' s+ R$ n3 x7 \, g$ s當日用左37分鐘答１２粒波子，差７分鐘才合格。
( R3 |" C  @: o: W; b13.........( E6 q2 ~, {* @1 X/ ^5 R

/ [9 H. a  E0 z8 Q' Y7 N[ 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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, ^' n  n. `: @2 I6 @我以前畫左個chart去答,3 t1 A& Y0 b2 I6 U3 y# I7 u. I& w6 L* v
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:
& n1 C. v" j# v" G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:
5 s5 @3 V3 d; e2 Q* ?+ ^; ]相信e條題目都有吾少人玩...

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- D. B) y# D6 `3 C* vPlayPlay, Let me know later who has the right answer and I will add points accordingly.# K1 _4 k+ N) G" X& a, i

& o4 l$ x4 c1 B* n. V1 xThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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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

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1-6 vs 7-12/ S  x, H! j$ P6 W6 `. u9 x% ~$ q
if 1-6 = 7-12     13 is fake9 `0 Y% C# [! U9 L- z

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Weight the 2 time 8 H7 e+ d6 l+ {; F, K" q

5 C7 |  k# F/ V( }+ T6 y! u# VSuppose 1-6> 7-12  Z7 {2 S0 W/ u

" s7 [1 V6 m/ a2 O5 \( b* X1-3 vs 4-6
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& p6 y6 G1 t5 IThen Weight the Third
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Suppose 4-6 > 1-3
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4 @+ S& `" l' nJust like the first Step
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+ j3 M3 J& D6 g# K4 vs 5
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- I8 h! B9 [7 N) Mif 4=5 6 is the fake one 4 g- S! y8 ^; G+ a% t5 V* J1 e
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if 4>5  4 is the fake one
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6 ~2 }7 f2 B  [and so on......................

hello1997

分3組4隻波子秤
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7 O; W- N$ J$ r# CGroup A: 1,2,3,4
) O2 d1 Q* L6 s* l8 qGroup B: 5,6,7,85 ^0 W2 Q4 D, B8 l2 E+ i
Group C: 9,10,11,12
/ }7 k& _9 H: i' }8 n( K/ j! hGroup D: 135 x$ ^; h& e- x; b/ U2 h

* M! |0 X: G0 O) Y2 E$ [# X1 uRound 1
% o! p- `( y- u9 N/ g8 tGroup A vs Group B
. c! M+ L: K  k" A1 x3 T2 }9 W如A and B一樣, 即較輕一粒在Group C or D
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5 x0 @' h3 O  A3 ^6 }Round 2
2 H$ C3 Z! F" S) n- ?6 ^" S9 m再在Group C拆成:. k8 j2 Z0 a6 h6 q
Group Ca: 9,10
8 U. a7 r9 j$ ?7 fGroup Cb: 11,12  K# Q% @/ K: R- k
然後再秤, 如一樣, 即13為較輕一粒.( F6 Q* x( ^( m4 g6 m! U
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如不同, 即較輕一組有一粒較輕波子在其中, 4 j0 f* t* y6 [% c9 \. d5 G
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 _+ n3 @2 s& [" |4 t5 w
Round 1
3 i6 l% s+ f- J1,2,3,4 vs 5,6,7,8 = equal# H: m; V( H# p. l4 F4 E

4 a% j) X( d0 QRound 2& j8 c& i  n, `
9,10 vs 11,12 = 9,10 < 11,12; l1 p; \" O+ |7 F
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Round 3
' G2 ^4 p8 D$ I6 C" ]9 vs 10 = 9 > 10& {, F9 _8 {+ b3 Q: i/ P- f. v$ J
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The answer is 10.: t) ~& a/ q3 u- e
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e.g. #2 假設7為較輕的一粒! D$ f7 {7 d, x2 }+ U% X9 _) R0 l
Round 1/ Y0 R; }$ j' o3 O( ?
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,82 G1 A) j' J. N( U, W

! V9 k7 p, F4 z% S$ x3 c2 L' ?; KRound 2
( w' i- u: B7 _4 T* X; e5,6 vs 7,8 = 5,6 > 7,88 m5 P* B; l4 l% G
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Round 3  I( }& G) \7 e) i7 u) |
7 vs 8 = 7 < 8+ d3 @/ o' `6 e" T
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The answer is 7.( d+ X; g# v! k# K3 j3 C, R' r
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e.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal
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; D8 w$ C5 u0 u( b8 }0 |1 c4 {# dRound 2
! r( x/ _2 i2 Q7 r9,10 vs 11,12 = equal; ^( E; b% J: t' P. Y
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No Round 3* o0 Z: p: V$ l4 S3 G

/ C- @/ M* Q$ R5 n1 D$ s- |" iThe answer is 13.& H. w$ L0 d( B  K$ J8 a
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唔知我答得正唔正確呢?!
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- c6 {% b0 Z$ B: ?5 _! Z9 w[ 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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7 P: a8 Z1 I9 }( \1-6 vs 7-12
8 x9 ~. ?  v' Y" L- e& \8 M- q' M4 [  \if 1-6 = 7-12     13 is fake
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if not
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3 ^6 _. s$ n7 Z1 _  }0 Q  O; G9 [Weight the 2 time ( p% m6 s4 d5 K: ^
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Suppose 1-6> 7-12
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1-3 vs 4-6 / K2 e) o. `  z- v' J8 Q

# V# v$ P9 F* Q2 T" YThen Weight the Third
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  ]) i1 S5 F( `Suppose 4-6 > 1-3) [( s$ ?- x* e
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Just like the first Step
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8 o% S) |( m5 X9 }: g$ q' c* j1 B4 vs 5
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if 4=5 6 is the fake one
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( x/ i: a, C4 C$ k7 f& D: Dif 4>5  4 is the fake one & M& W  Y3 @+ S3 Y( P
and so on......................

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問題第二步
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; _7 Z( |4 ?! ?  y7 cWeight 1:  1-6> 7-12+ s. w3 p! y2 Q, T/ x/ w% D3 k  s
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-67 o+ @. q( z% w) _6 W

' v  I& ?: y' y! u6 H你第三步点去搵 7-12 边一粒???+ H4 p; l: i( }: w( m( @
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========================================6 m1 B* A7 U6 D) H

$ A2 D+ T9 }9 \7 f7 |5 e問題第三步
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Weight 1:  1-6> 7-126 @- ~4 `  E  m$ w

6 t+ I, v2 Y2 H7 `. x' e& t- zWeight 2:  4-6 > 1-3 % o0 L* _( j- a  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