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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『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)。
/ f/ k5 V' S) @, V# _6 K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？』- N! x2 J# c8 }5 w; j; V$ u
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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
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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:
- l% B4 a5 H8 O  r% w  U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,
# B6 o8 }' D# O/ M$ b0 _( q等我搵下仲在吾在0 X1 {+ ]  L1 k3 B% T
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
1 C9 ~- ^) P+ s+ I! |5 k3 t; o; t13.........
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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,: i! T+ \  g( E) e( [9 ]
等我搵下...

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1 L6 l* b# V% O. k9 \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:
7 H2 u! @# `% M3 m9 C9 m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:
+ T5 q, ]* w* t. l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." A* W% }2 e) f2 t3 i! i# {( y
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:- ?1 H# g; H( n3 [1 i! \* j: i
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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8 J* f/ r+ t, \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
8 E( W. o+ u0 T+ D" l4 D9 yif 1-6 = 7-12     13 is fake
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if not 8 s) \4 y( Y( }' n+ `
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Weight the 2 time
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Suppose 1-6> 7-12$ t* }& {3 }0 l1 B& p
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1-3 vs 4-6
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Then Weight the Third- B9 m; [$ X8 V/ _
3.
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Suppose 4-6 > 1-3
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: E8 }% K4 R  y/ S6 [Just like the first Step+ f, ?) v) Z+ T& }. f, k
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4 vs 5 9 r& v6 V5 m+ I' S" C/ w

* {6 C0 w0 ~, P4 Oif 4=5 6 is the fake one * i, T2 T! U% q* X3 P, x0 |5 I6 o
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if 4>5  4 is the fake one ' B& ~7 f9 G( V- K: T

, r, @9 \, T% G3 A. d+ Zand so on......................

hello1997

分3組4隻波子秤( W7 r, l1 r0 D# d/ V) j- a* `
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Group A: 1,2,3,4
/ ^) e9 _/ r! c- E5 ]: FGroup B: 5,6,7,8# z" C7 Y% b, ^8 b+ T$ W4 \
Group C: 9,10,11,126 f' ?9 t; q/ L8 t; A
Group D: 138 u( l, i4 [# Z. y5 b$ Y
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Round 1
1 f0 _0 }7 V" S0 Q- WGroup A vs Group B
9 D. A; g* ]  |  ^) @如A and B一樣, 即較輕一粒在Group C or D; H9 z+ H8 ?* ?4 Y
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Round 2
8 X9 [: W: ?* k. L再在Group C拆成:
3 P: i5 W+ O/ OGroup Ca: 9,10
* z  `' b. x' H9 [1 t9 N( t( zGroup Cb: 11,12
" M& r+ W7 C& E, j6 @然後再秤, 如一樣, 即13為較輕一粒.+ E* H4 E9 ?; C0 a5 @! L, j  X0 G+ f1 f) G" r

( A! Y3 T0 u$ C: F如不同, 即較輕一組有一粒較輕波子在其中,
7 b3 [5 W+ ?8 R+ B要再秤, Round 3, 之後便知答案.. N5 U$ ^. R! i# M$ x3 r) H+ ]
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e.g. #1 假設10為較輕的一粒
( Y3 C: L5 Y, Q/ cRound 1; k3 r  @2 ~7 D8 A2 `& v2 D& b% P
1,2,3,4 vs 5,6,7,8 = equal
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& Z- m& W2 b3 H3 j$ V1 @( h: JRound 2
2 x; ^! a5 b; @' |9,10 vs 11,12 = 9,10 < 11,12
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) C# R3 ~0 A7 @! L1 r' YRound 3
& _3 ^4 g# m5 k  i9 vs 10 = 9 > 10
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2 B4 d) F9 `0 KThe answer is 10.* {+ O7 `9 a6 H7 u
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e.g. #2 假設7為較輕的一粒2 |) z' ?1 i# [! U3 m8 |$ u
Round 1! @# n, R3 W2 P2 L3 \  Y
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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/ O' r5 P% C7 d; jRound 2
. _( M' `  U6 J6 P2 B) x& Y2 S5,6 vs 7,8 = 5,6 > 7,8
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7 vs 8 = 7 < 8& O5 j" E+ W1 N, C. Z6 e
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The answer is 7.& p- |, D& Q9 a2 H, ]

8 ?7 J( ^+ \" b! q2 }e.g. #3 假設13為較輕的一粒
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7 _4 M1 a; \4 M. m4 s8 Y1,2,3,4 vs 5,6,7,8 = equal
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Round 2
1 Y& o- v3 }* V" u7 I; V& Y) Z: V! J9,10 vs 11,12 = equal
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No Round 3
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4 B4 I' g% c4 ^+ s, K1 xThe answer is 13.
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# A% A- t9 `2 `. }- Y( k唔知我答得正唔正確呢?!
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% U' x6 W/ J3 V9 F0 |% B[ 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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. Z9 l0 T" x( N% {1-6 vs 7-12
2 Y, O+ S( L" xif 1-6 = 7-12     13 is fake, V1 v' X! {( q' Q/ C

& B. P! U- J, Rif not
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9 B3 {# K9 v$ h2 Q  dWeight the 2 time
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" A( O+ L9 _* ?! B  }+ m) VSuppose 1-6> 7-12% Z6 F3 o8 p2 Z0 D7 H6 B9 v$ P4 T

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Then Weight the Third- A* C3 C6 |! N/ @) A: [
3.
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Suppose 4-6 > 1-3
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! z, k" r- ~& U% Q# \! }Just like the first Step1 j' `  s, ~& I  i7 @" A# X
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4 vs 5
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if 4=5 6 is the fake one
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0 x. B' K& B/ Mif 4>5  4 is the fake one 1 q& e# ~- |4 t
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 = 4-6/ J" ?1 G% A2 n" _9 |  t
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你第三步点去搵 7-12 边一粒???! g1 Q4 O+ w, m5 l
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========================================
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9 [& o4 O$ |( d: H% n. g+ Z  o問題第三步
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Weight 1:  1-6> 7-125 Z$ q7 P" z1 R7 C9 d( c) l/ p

7 z" l( s6 E/ [8 u0 B" f. V7 oWeight 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