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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/ v# \# w8 _; U) 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)。
8 U% U( L9 S" T$ G$ ^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  F+ e; b$ q

, l; z4 M; a" X注意: ; S& D+ N+ ^( r" c) }. R% o
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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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+ G/ _) |1 k" O8 j5 `+ J[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
3 J: E2 W; e4 V1 h* L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 m- e2 E& `! x8 ]5 X) @) _% G0 x9 S
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。2 ~0 f0 Z; B: s. [6 P
13.........* T3 }$ Y7 }- @4 u

+ ~, s; Q  w0 L8 l4 y[ 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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0 k* J/ F  X4 p4 k) l我以前畫左個chart去答,
' g6 \8 t/ b9 n4 s! B# Y  }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:
# x  o( Z# @* C. E$ p唔識隱藏...已經諗到..

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sor !!!....e加改左
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" O: p5 `0 S" V! R! P2. 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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! u  S! h% J, }$ a: o2 z[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:1 _" A. [6 w; l) d4 a( o8 ~1 {
相信e條題目都有吾少人玩...

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. l2 C/ q/ [( a$ C& b8 [PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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. F2 U( [! E, j1 u- r2 aThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:# S) F1 Z: e  A. ?% _) Y; x3 K

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# B7 @+ C/ A0 K& CPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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" t% V7 k; S; ~$ q$ E4 T: ]Thanks

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+ q1 U0 b' X8 q' E7 K# ^1 Z不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
6 }. c3 F5 J, w$ T1-6 vs 7-12
, U7 S: ?0 }) \( R7 Cif 1-6 = 7-12     13 is fake) a8 c6 Q! G! f0 B
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" z3 I+ Y' a- s% pWeight the 2 time 3 ]! f0 A. B5 P. s6 V

" ^1 o' ~/ r9 X  Z. l4 G$ s/ H3 S, W/ ^Suppose 1-6> 7-120 S+ T% W! T0 E! I

& D- K7 j" C, a1 i1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3
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Just like the first Step; o+ N5 s$ _5 B: Q
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4 vs 5 8 G! g0 e( v+ d

+ N9 x8 f$ Q1 q" sif 4=5 6 is the fake one ) f3 v6 v) p4 z6 M
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if 4>5  4 is the fake one 0 |% R  V. O3 ?
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and so on......................

hello1997

分3組4隻波子秤8 y+ `* u3 w9 q
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Group A: 1,2,3,4
. h; A' y* @( }Group B: 5,6,7,8
; J4 q+ D4 T# l! U* X& PGroup C: 9,10,11,12
' \% i; H6 e2 Z3 T% r/ M/ I/ ?& C- e2 SGroup D: 138 F/ I' @1 q) J# Q& n8 H  t8 {3 J
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Round 1
, L: o) m8 X5 YGroup A vs Group B
4 f. U0 q: U4 i! F5 }2 ~如A and B一樣, 即較輕一粒在Group C or D$ \2 J5 q! G$ l1 b2 Z5 g
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Round 2
1 o7 Z: d/ x9 }5 _再在Group C拆成:" Z! m; e$ M, x
Group Ca: 9,10) w/ X! Y. c  p$ k8 E" t
Group Cb: 11,12( P" G5 t( Y1 d& h. d
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,
9 W& {. M4 P& ?8 P# P: z9 I8 z要再秤, Round 3, 之後便知答案.4 g5 E% ]6 z: L" p- U
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e.g. #1 假設10為較輕的一粒
9 i9 J4 b6 ]5 e6 p; Q! |0 ~* ARound 1! \4 M* R" x+ ]
1,2,3,4 vs 5,6,7,8 = equal
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; a+ S6 g+ a" U0 E$ A* y! P% CRound 2
/ Y  a' z2 s2 j, Y  A0 W0 {9,10 vs 11,12 = 9,10 < 11,12& t4 {  I2 A  D, U! x

7 e5 [# {( I2 X, i  ^0 ORound 3( x. y: ]  W+ ]% L8 H
9 vs 10 = 9 > 102 S! u7 H. S/ `7 M

2 [% W6 C. A3 fThe answer is 10.6 j% t6 q6 S' @$ S
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e.g. #2 假設7為較輕的一粒
: J& P8 W/ O  Y/ {% `. g0 ?: wRound 1
8 |. r2 L- j4 P2 `6 w0 V1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8! I6 {/ F& m6 i" C) G

' j# t8 ?  u( [2 `. V3 S7 s/ ?; PRound 2
6 \" J$ ^; G6 L+ Z5,6 vs 7,8 = 5,6 > 7,88 c, P6 e" Y9 ~8 T! j3 u! g+ f4 _

3 B: }! @- R5 l+ HRound 3$ {( N% ?4 r; X; j2 ^
7 vs 8 = 7 < 8
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# F% E9 g5 ?4 O) q8 V4 \- r7 U& nThe answer is 7.
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e.g. #3 假設13為較輕的一粒8 M% j; y$ C! l! U% [  o% [5 C- h( ~
Round 1  A: q+ W% [5 }( k  C
1,2,3,4 vs 5,6,7,8 = equal0 q; {4 z* D. J
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Round 2, o+ H/ p# h) e" S: ~, O! ~
9,10 vs 11,12 = equal0 o8 _9 N& k0 t$ u& g4 {
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No Round 3: ^+ K( e% P0 m# j8 q) I( [7 q" O
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The answer is 13.
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+ u, ^  `+ T) I1 v; u$ Y4 t( x唔知我答得正唔正確呢?!
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4 o. U: K8 \' V& Q7 i/ ^[ 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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1-6 vs 7-12( @. {5 e2 `8 o$ G, T9 u! V* E: d
if 1-6 = 7-12     13 is fake
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Weight the 2 time 7 C" m) X, V: m" p9 r) v, T; P
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Suppose 1-6> 7-12
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$ `; H+ e' W5 w4 B% N/ w1-3 vs 4-6
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Then Weight the Third) F( B5 v& F: l! w
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Suppose 4-6 > 1-3
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( {) w2 ?+ k- t) ?2 J" oJust like the first Step1 o' ]: M# ^3 {/ Y: e7 m9 |
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4 vs 5 / P: _  r0 v& T+ ^  p( X* p) P2 S9 P
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if 4=5 6 is the fake one 2 Q) I9 r0 S+ |5 I

2 z1 U& \5 q+ ?9 g" \& ?/ @if 4>5  4 is the fake one / X8 g% L) M9 s7 ]7 i- P2 P
and so on......................

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& L# W: C5 w6 {1 p  k7 {問題第二步
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$ M# S9 M( ?* jWeight 1:  1-6> 7-120 z, O5 ?. v$ s- e- ^' m' i
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6( M% n0 C" J* p# u( l0 W
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你第三步点去搵 7-12 边一粒???
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; \7 p* r: N% n4 o  m' V; J========================================
  ^8 m; }7 A( E
% |7 R2 ^) C1 w問題第三步
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+ l- L+ w7 w& \" m0 LWeight 1:  1-6> 7-12- n( Y; v1 ?) p: t& }
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Weight 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