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3 W, Y0 H% G1 \

1 i7 E: R: J7 n; [& a4 ?『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)。/ {) v- c! B. Z2 s( E* p2 q8 c
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 b- i7 W+ A& e9 o# H# W

. \' `/ I; K( n: w+ q0 V% ?注意:
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# N6 j# @6 X, i: d! A+ O1. 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6 z) R0 ]3 N" I6 k  v( {. z
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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:* H: X& i: Y+ ~
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,
8 A8 t, P2 Z8 }, N% ^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。& D0 \/ n: j' V) d# e
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:0 G, t, x2 h# |
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我以前畫左個chart去答,
! W/ }5 h: g3 a5 n, B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:
+ v$ {4 j( V# ^) l, U* C唔識隱藏...已經諗到..

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' t4 g# m6 X0 `% `sor !!!....e加改左  M! T0 }) l0 y& h" a8 K! {, D( [, h* 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8 Q* |! \+ X1 K! L
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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 E2 Y1 Z! u& a: K/ P
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.. J. |  M& w' m1 n: L% y/ c
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:8 j3 {: d0 ^) S6 K) B" l4 G4 {/ x- I) x
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' s0 m. a! P% o& Z8 B, S( wPlayPlay, Let me know later who has the right answer and I will add points accordingly.  q* ~* N9 ?0 `1 J

0 x* l0 I7 o+ @$ jThanks

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+ N2 T; [, g, z, C1 k5 [) y- C# x不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
, @6 ]7 R, i: b( f) N  S* S1-6 vs 7-12
, B2 l& [! p9 Iif 1-6 = 7-12     13 is fake% i; s/ N1 `  n3 u- }. r: E( p

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. G4 u0 U$ `5 ?8 ]& x6 |6 cWeight the 2 time 5 U3 o, s+ N; n& w7 G) h0 d

8 T% f" ?: n* B+ g5 D7 vSuppose 1-6> 7-12/ C; M  F* G+ @2 g  z  w: N- x
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1-3 vs 4-6
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Then Weight the Third2 N' i" K& u! X: Y
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; d/ R# l: J; l" ^$ E$ ISuppose 4-6 > 1-3% D# y4 i9 s- S# k$ K# L6 ?

1 K' n" ?9 _4 xJust like the first Step
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, ]! {1 k2 p9 w& E4 I, z4 vs 5 # E- e' d: O8 P" W
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if 4=5 6 is the fake one
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* O1 h# u3 u% K( r# l: L/ Mif 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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/ o. B* X" t! W3 U$ M6 I3 y& VGroup A: 1,2,3,44 y/ V2 d1 p9 e4 Z8 ^& `% t6 b
Group B: 5,6,7,8; N! q4 m$ N8 p1 O
Group C: 9,10,11,12
, y: [& X# p- c8 a% b# z, l3 ]# IGroup D: 13
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Round 16 K0 w4 \! P* Z' Z
Group A vs Group B6 V7 ]8 ^' M; S1 W
如A and B一樣, 即較輕一粒在Group C or D
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* c/ O1 \6 {) `% f( N/ @" D0 sRound 2
! n, r7 z; t9 v" B( T再在Group C拆成:
" @$ C5 Y/ x7 r8 I# E9 S0 fGroup Ca: 9,10% x$ b1 g  a8 b: x6 d3 L
Group Cb: 11,12+ ~4 v+ @0 Y! f- e# s1 c
然後再秤, 如一樣, 即13為較輕一粒.. L) S) z: p2 P+ s1 a. ?4 s+ b

* P- _, U1 G& C# e  ?! a如不同, 即較輕一組有一粒較輕波子在其中, $ ^# w/ V; R0 r, i+ I
要再秤, Round 3, 之後便知答案.) b$ w0 n; h" h, M# v6 k" ~$ U' ^
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e.g. #1 假設10為較輕的一粒+ j- W/ U& p* W* H9 Y3 S# m5 ?
Round 1& }8 T( J+ k, k1 g
1,2,3,4 vs 5,6,7,8 = equal
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- t5 J8 b; y3 M5 b% R  jRound 2
* r. U0 ~/ N8 C, a9,10 vs 11,12 = 9,10 < 11,12) p/ V) Z/ l% t, j% I( _; E! a
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Round 3
: H1 r& h' E& ?9 vs 10 = 9 > 105 Q1 O4 i* B/ Y1 u! z

1 x/ _" \* h2 W4 ?+ W$ F9 AThe answer is 10.
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8 Y" u  J# y) Z6 Y, g- q4 M7 Ie.g. #2 假設7為較輕的一粒
, R% U$ r! b) W  P  p& TRound 1
- y" h3 @. D) D; m. U( L/ G1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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1 r3 l! Q* y8 Z+ C& U6 K% [5 vRound 2
/ H7 ]0 r, W" f, h  V) [5,6 vs 7,8 = 5,6 > 7,83 C- G! o% c; e, X6 h, \
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Round 3
+ L% o! M4 |, ]& k8 x7 vs 8 = 7 < 8
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. H8 f: z9 }3 s+ y/ FThe answer is 7.$ A& {& a$ c+ Y! o  C: v
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e.g. #3 假設13為較輕的一粒
( p! g! C+ F6 C' N4 VRound 18 }' B- Y" i# ?( X* j1 i9 x( _
1,2,3,4 vs 5,6,7,8 = equal  h* B/ f5 w) \% O2 q: s% z

$ T  l  o( Z' U# z0 i! _Round 2
7 m% b* T: C5 k9,10 vs 11,12 = equal9 Q- v3 R9 J1 D: q" @& X9 N: C

$ l# {1 s; t+ u0 p* z2 ]" U' [0 |No Round 34 s$ X; @! U+ u
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The answer is 13.- o, f6 `" s. I% X
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唔知我答得正唔正確呢?!
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- [( l. D' ~3 c1 C[ 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 m5 n* Q! s& M2 R7 d1-6 vs 7-12
9 J1 o" E( A! f+ x+ L/ U5 Oif 1-6 = 7-12     13 is fake
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; v0 Y- m  e2 w/ b. e. Q6 ^1 sif not
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! t' C7 \4 M3 VWeight the 2 time + a, s* l( ?7 a2 l  D% ?

9 p9 S! u) r% Z$ kSuppose 1-6> 7-12
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1-3 vs 4-6
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7 Y; Q0 M, e3 F1 t: }Then Weight the Third
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6 d8 g; i) R2 u1 b' P( y( RSuppose 4-6 > 1-3
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' l% D; I- Q8 [# [; ^Just like the first Step
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1 I" ?( g9 N0 N) b4 vs 5
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if 4=5 6 is the fake one : n$ X7 r% ]. i# H. _

1 ^1 ]9 n; d' \if 4>5  4 is the fake one " _  j7 {  ^5 V; T; x2 M
and so on......................

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& |3 v, T: T+ A/ z; O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 = 4-60 P& H9 X' ]$ w4 `

# z: b4 X8 c4 @/ X2 F4 o你第三步点去搵 7-12 边一粒???
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問題第三步5 N. H+ |' X/ {1 L
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 $ d, ]% k3 P' H* t( R$ {
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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