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* c& @. M6 s8 Z: ?4 a4 |9 [( @
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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)。1 M# P( e5 n* Y4 B3 D4 s; w: W
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: ' X: E% s2 R, U. p1 M, A% w7 f; L( R
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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:; I% e4 l4 q2 u" j/ l+ U
相信e條題目都有吾少人玩...

2 B: A0 C$ E5 S" D我以前畫左個chart去答,
6 x0 f. e* [, {0 ^  R8 N等我搵下仲在吾在# `- S5 u: V# i9 v- @' \

/ Q$ l: {1 q/ G, U9 Q: q當日用左37分鐘答１２粒波子，差７分鐘才合格。
, |5 l% o* R' H1 Z, H, E2 |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:9 c" L3 [7 \1 N3 L

2 ]$ |! m+ K9 D/ {6 n3 G) w我以前畫左個chart去答,
$ h' d7 D% R: }7 }4 R% s! r) X6 }! u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:9 [- T4 s6 [7 z. k
唔識隱藏...已經諗到..

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% T* x3 B) \$ \" [& G1 g4 Qsor !!!....e加改左% g3 d/ K, K. ]( E

$ `9 E& U. z# N  S5 J2. 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 z& o: ~% B; S- Z8 N
相信e條題目都有吾少人玩...

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1 m& Y2 x# s: {- [9 y2 ]  z  H$ SPlayPlay, Let me know later who has the right answer and I will add points accordingly.) r  i1 l! }9 b) M& s, S
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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9 h4 M) q# }0 e4 }' E: jPlayPlay, Let me know later who has the right answer and I will add points accordingly.! v; c: V' U3 D- h
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Thanks

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$ o& [6 c  y9 K/ J/ J  u不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.! Q6 M! ~7 q6 l9 {9 w
1-6 vs 7-12
2 c* U/ Z2 q. t5 rif 1-6 = 7-12     13 is fake7 Z( d6 [+ h& j2 R1 f1 c

* r, ?" B- `7 ~8 {if not $ C) |( ]2 ~( I! }
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Weight the 2 time ) L) g/ ?% F& D) f6 M# X
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Suppose 1-6> 7-12& x( G  S4 s. D- I3 U4 ]

. Y3 z5 a8 q4 ^$ A1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-3, Z& \, Y0 _' E+ H# j- q' a

4 i. ]# h9 Q/ ~" ~0 [5 E$ i" A% RJust like the first Step
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8 d8 ]8 y% `+ c$ c2 x- `* Q+ i4 vs 5
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. O, L' C3 U6 o7 yif 4=5 6 is the fake one
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! n+ t8 L/ K% k* I. t& @if 4>5  4 is the fake one / X/ c2 s" K/ q- k
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and so on......................

hello1997

分3組4隻波子秤0 l/ ?& J) O* n
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Group A: 1,2,3,43 q, j* q1 Y, q* Y
Group B: 5,6,7,8/ ?* {9 Q" D0 c4 s' g; R, T. C
Group C: 9,10,11,12# d% y( E" m7 ~# y+ J5 R
Group D: 13
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Round 1
. U9 p3 b7 V4 G# h& XGroup A vs Group B1 C% ~6 s4 h$ n* a' T+ x
如A and B一樣, 即較輕一粒在Group C or D0 Z/ |) p3 ~0 D

" F- z- y# S" F. C! KRound 2# j+ D) {- Y+ J- d
再在Group C拆成:9 O# i. [  e0 C; x% u
Group Ca: 9,10$ L- s4 E, m. R$ ?9 v% ?
Group Cb: 11,12' k, U% Y3 ?; W: N, g1 ]# e& z
然後再秤, 如一樣, 即13為較輕一粒.: l6 M) n- Q2 a# `

9 C1 G( ~3 p8 H$ q' C1 D如不同, 即較輕一組有一粒較輕波子在其中,   m5 P7 Z, E2 C
要再秤, Round 3, 之後便知答案.% O! t& B1 t" V8 F) h
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e.g. #1 假設10為較輕的一粒4 c) c9 w9 f1 `3 Y
Round 1
6 H% ?2 R9 L- H4 O1,2,3,4 vs 5,6,7,8 = equal
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Round 2' i+ w- J2 M) r( R# @6 n
9,10 vs 11,12 = 9,10 < 11,12! C" @$ y* N: M9 `+ K
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Round 3- K0 I. R) O: p4 [2 Z' @
9 vs 10 = 9 > 10
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The answer is 10.
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  S) f# s  m3 B  M# be.g. #2 假設7為較輕的一粒& w/ d2 R$ E# X5 [
Round 1
" W; A; m+ Y/ Y/ G1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,88 j7 \( S8 u0 A. C. _! ~

* c% m. ~% X) mRound 2, w9 [8 n- O' |$ p9 [0 I
5,6 vs 7,8 = 5,6 > 7,8. G5 G( j0 L- ?. K4 Q% }5 {
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Round 3
* z/ G# z3 ~' l1 M7 vs 8 = 7 < 8
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4 G6 O9 N% m4 s/ i, s5 {  mThe answer is 7.
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, r2 D) t' ~( Ze.g. #3 假設13為較輕的一粒
9 G* W/ [6 N0 _7 g+ |% o! d* h( [Round 1$ J. Q, {$ ~& c& G& `+ M5 @/ e
1,2,3,4 vs 5,6,7,8 = equal+ @9 t1 r9 `% x- e0 V
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Round 20 F5 W4 g: {; H) ^2 u
9,10 vs 11,12 = equal. d" }! m. p) Q0 h

# U. C- V& a; NNo Round 34 L1 [' R& O. m0 V

2 D+ g+ F) L  pThe answer is 13.. k. J; ]7 [& J2 O

$ W% ^9 ?  }% x( _( M- v" P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:5 R# B5 Z* w* ]- _+ k
1.6 d7 H* @% x1 }6 a& R/ c1 S; Z
1-6 vs 7-12) a7 G0 Z+ U5 I, V! z
if 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time 2 m7 L' \( Y2 s6 h4 Y6 d

9 n7 V2 l; c$ s0 I+ NSuppose 1-6> 7-12- x; W) o. e5 }% n" i  B' Y
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1-3 vs 4-6 ; t: d& z6 O' ^6 a& a2 V) Z
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Then Weight the Third: k) x: q' K- v+ Z1 ]
3.
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Suppose 4-6 > 1-3
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! R' B3 ~6 H' z$ S* _3 ZJust like the first Step: y6 X) q& ?( }( {+ f) ~5 X1 f

6 y5 g# P0 G  T& f! g. r, R$ h4 vs 5 5 r4 D) c# L  V& N! ^8 A
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if 4=5 6 is the fake one
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/ e  h5 t0 [7 Q5 f1 m- Yif 4>5  4 is the fake one . y5 x7 ^  z% I
and so on......................

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問題第二步6 X9 X) Z+ Y3 E: a
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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
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你第三步点去搵 7-12 边一粒???
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1 i( B. r) C2 ^2 g問題第三步( o, u2 t' _7 ]4 O4 w
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Weight 1:  1-6> 7-128 E) f; @% i5 v# X5 |8 w
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Weight 2:  4-6 > 1-3 6 d& k% t, `, \5 {4 P  y

6 y4 {8 h% e7 W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