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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0 l5 U  F# r/ j『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)。! i( Y3 w+ U. i$ r' b0 |
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？』5 i- [2 {- A! D+ x. Y' \" U
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注意:
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& s4 N5 r7 I; @' C; y+ a, X1. 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- U  V" |& F; \5 F( m5 X* c

* {) Q0 v/ J8 u5 E[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:) T: R0 T6 P( d8 A# h
相信e條題目都有吾少人玩...

* L, _. @/ ~* p/ l我以前畫左個chart去答,
% R+ T5 R5 Q0 t" X$ v等我搵下仲在吾在! X; T; O/ L7 I* B! y
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
" i2 |8 e$ V7 T7 d3 E( j13........./ k+ L: L* M/ G, U' [0 u& v2 L
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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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0 i  I; t! {) q$ |3 e; n我以前畫左個chart去答,: W1 A2 `! J8 f/ p6 Q/ t* H$ X" {
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:# L1 I" u. o: Y$ `0 d7 y  [
唔識隱藏...已經諗到..

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7 E2 w0 X3 w$ ]( B2 k* ]sor !!!....e加改左
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" V  z+ n* Q* i' V3 c2. 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:1 L7 y: P9 r: w6 W! S& ~' G) B4 N
相信e條題目都有吾少人玩...

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' z+ W4 |$ a% Q( N$ OPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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+ w8 b2 @) w* @6 g" CThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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* [- Y7 R7 `" d1 }- U% m& M# HPlayPlay, 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

1.
- f% Z) S6 Y& _. P& ?0 J1-6 vs 7-12
9 P* f  t* ~+ N& F; s  iif 1-6 = 7-12     13 is fake; S5 C) q- z# \1 j4 s# b
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if not
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6 {  @. t6 D2 G) `: BWeight the 2 time $ d' d; Z1 z8 ?. M4 U) }. I- G' j
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Suppose 1-6> 7-12
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9 v& e! d& a. Q% `3 p) h& V1-3 vs 4-6 3 d5 x  t' [$ m9 P
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Then Weight the Third/ d( t2 t/ b7 _
3.
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Suppose 4-6 > 1-3' D  n0 {  W6 Y  C; X- l
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Just like the first Step
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3 `7 V+ ]  s6 t9 ~* T" @* `4 vs 5 " ^: {' _! j" {) q

9 Q: |$ d2 \- S0 Jif 4=5 6 is the fake one
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, Y8 n  ?* E5 o7 M4 p; ~% b; H. Nif 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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: S& N  w  H& ~1 {" iGroup A: 1,2,3,4* q. E/ K  T' S9 z' ?$ M% |
Group B: 5,6,7,8
0 p% a' s; V  |9 N; d- n/ HGroup C: 9,10,11,12
  `$ {* |! r$ B! c0 H1 @Group D: 13
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Round 11 |1 e. l8 S* A, V! q! a6 y
Group A vs Group B
0 g. B9 V4 e! a, ^( g* s  S' @* W如A and B一樣, 即較輕一粒在Group C or D' y& G8 y! j0 F/ e. d

5 _. R/ Q( p5 D/ lRound 2
/ m- [% h& R, {' r再在Group C拆成:4 r5 h2 D+ s1 n3 [% G( _6 S
Group Ca: 9,10
/ E8 j$ ]! o$ ZGroup Cb: 11,12
0 @+ a/ D& q0 Z. C' v然後再秤, 如一樣, 即13為較輕一粒.1 r  _0 _0 E3 j% }

& l( p# L, Q. n如不同, 即較輕一組有一粒較輕波子在其中,
8 ^! @! Y9 k: t2 R& g  b' C要再秤, Round 3, 之後便知答案.3 I( T( J. R( S  E$ {1 a
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e.g. #1 假設10為較輕的一粒5 m& g7 Q, Z5 B; W% b! w1 ?; X' F
Round 1' D, J: Q9 e' l, t' u7 E2 ]+ e: e7 ?
1,2,3,4 vs 5,6,7,8 = equal
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0 q" \+ h' D$ L' xRound 2
6 w5 [9 j5 }3 D9,10 vs 11,12 = 9,10 < 11,12+ ~3 L6 }% [& `

5 M& ?2 e7 E5 }Round 3
* A5 K5 l, k% Q6 M0 _1 O9 vs 10 = 9 > 10, A4 w. Y: W  W- C. ]6 {8 R$ p
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The answer is 10.) i6 N0 C4 Q) _0 E
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e.g. #2 假設7為較輕的一粒/ O5 Y" G" l$ p+ S( a% W
Round 1
% L  T: N3 n6 t. H1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8) ]7 G7 D1 t* Y1 R* m: F6 s

5 I9 G  I. q; D6 k& ], URound 2& A- Y9 Q: }8 U  l6 _
5,6 vs 7,8 = 5,6 > 7,8/ R3 X* f/ E& h

0 x# G. V9 M1 M5 `Round 3
! A1 F- c! P. d3 n! \" m7 vs 8 = 7 < 8
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The answer is 7., x6 x% B" I# d8 _

. W' Q) ^, g6 X) \9 z5 \: V  [e.g. #3 假設13為較輕的一粒8 t0 g& @% {6 i, Y6 d4 o
Round 1
/ Y4 x6 F- l9 B4 g8 [7 ^, x% n1,2,3,4 vs 5,6,7,8 = equal
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0 E9 \5 P+ P' i$ ~Round 2
% {# C. y" q, C' [4 J8 r( g9,10 vs 11,12 = equal
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No Round 31 C' j; X. [8 S0 h

/ L0 F$ \4 B9 k1 \The answer is 13.
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唔知我答得正唔正確呢?!
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[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:3 a: X0 u( [* l, d' h% @3 J1 M
1.
, f- @# y& q) S1-6 vs 7-12: \, \0 }' _8 [
if 1-6 = 7-12     13 is fake, I, e* |! H8 |( V; d9 f4 I
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if not % `- W" N4 |$ e3 W, |
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Weight the 2 time
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! x  i0 d7 ]: |& k) e5 L  oSuppose 1-6> 7-12
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1-3 vs 4-6
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6 m. K6 W8 a7 ^  Q* r1 v& X2 @/ gThen Weight the Third
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1 n* u' g$ I7 w! s$ T' Y& cSuppose 4-6 > 1-3
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Just like the first Step* `* u" j7 v9 k1 A! L) U

* ^, o* v% {4 d! k$ Y) }0 E4 vs 5 ! ?$ |$ c$ L/ W( a
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if 4=5 6 is the fake one
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6 b- x$ j$ c- g6 q! w: E1 Jif 4>5  4 is the fake one ' O  y2 d" \" G. M: l  d
and so on......................

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- U' L) z1 y' s8 b( _1 \" U問題第二步4 y/ D7 c9 ^+ ]) g, d2 h

4 o* i9 R$ Y! uWeight 1:  1-6> 7-12
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/ j, u. s9 D# d3 s$ `Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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! e. P6 L8 F5 X" J你第三步点去搵 7-12 边一粒???
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! D* e9 r9 V$ G: U- C========================================( U  r) t2 K( Z1 L) V( p; U

) |  b0 I& c* M/ z* _問題第三步
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Weight 1:  1-6> 7-12/ J; ^. u' o# q( Y) z1 |) v
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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