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)。
& @/ @3 \; e: j  w# {0 Z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？』% }2 z7 z- E' x* t
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注意: , ~5 ~' }# |6 h) K( B4 Q6 n& z2 ?

( E. N2 i0 B$ a8 \0 f* X; Q0 Z2 i1. 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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& |, }8 q7 M% T& V- `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; c% o7 J  o! r% R4 V- U! H
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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:+ D# F/ O7 J, S6 @
相信e條題目都有吾少人玩...

  S8 Z& L- G8 D, p7 ~我以前畫左個chart去答,. U& w! L: h  G/ }& c3 T
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。
: \+ G) a; c: f# i9 I13.........
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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:. I! R1 j1 B2 Z% g# E4 C0 g+ t$ g

: f& L3 d/ E4 Y- v我以前畫左個chart去答,2 h" ?3 Y+ [' B2 t
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:- U3 d2 g2 U! x. R8 S" Z
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:
2 W/ ^- M; y& X0 ?0 H, U* I$ e+ D% f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.) T3 C4 P* J, v

8 N% Z3 U3 X! f$ XThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:; ]0 h) ?" {6 s, P) A; D

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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) Y) S* _: o& x! I3 _Thanks

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/ r" _" ~/ g! t9 A" y* S; e* u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
7 n4 g3 G9 ?5 y, t0 Fif 1-6 = 7-12     13 is fake0 [; [% g! E$ g6 W  U4 X
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if not
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Weight the 2 time ( }1 ?; d' X) J! D7 j; |) I2 y! |
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Suppose 1-6> 7-127 L* Q$ @" Y8 P- D/ l, Y

  o6 K/ f, c: m5 ~4 f8 d1-3 vs 4-6 : Q9 O. H! {0 ^" `+ z
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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. H% [( K; v9 t; J# t& A; y2 X

7 F' Z4 @. v9 T0 G: h1 `4 vs 5
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if 4=5 6 is the fake one
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3 p2 V' }8 m: |) d" g* ~$ U4 ?if 4>5  4 is the fake one $ T. ~% ^" A) W8 F
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and so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4
8 z: N) Q+ p* q3 YGroup B: 5,6,7,8
- ?, T+ |5 H5 O$ @$ RGroup C: 9,10,11,128 u& r, s  D) {7 M  S# T' i) r
Group D: 13
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' A4 i) u8 n3 Y, ERound 10 R/ ~* \  m$ Y  o
Group A vs Group B8 U! {% }4 E3 n3 r% ?
如A and B一樣, 即較輕一粒在Group C or D% k( P$ v  s% W+ ]8 g0 }/ ?) p
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Round 2
5 Z) K) H. C, i再在Group C拆成:
7 \5 f1 V$ M  D2 r- nGroup Ca: 9,100 F$ X" ?, b7 a# K. J" J
Group Cb: 11,12$ ?- i  q$ {- e0 {3 b* o  t1 {8 S
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, ( t: B8 s1 H- h: S% n
要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒. \3 z. B, R, z2 l: Q; T1 d4 ~
Round 1
( r2 H/ |  K5 D- ]: D1,2,3,4 vs 5,6,7,8 = equal$ V5 B! K- n$ }. L  q. q: G

* @, U4 d( Y9 F; q3 `) ^* kRound 2
6 T1 _$ [6 [3 Y. ~/ n$ i' J) G9,10 vs 11,12 = 9,10 < 11,125 d8 ]4 a4 \1 \8 E

# C. x, |2 i% qRound 3# k3 r- G9 ]+ R& `. [
9 vs 10 = 9 > 10
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The answer is 10.$ J3 N2 n# P* r

# L# @5 Y2 r* `$ t2 x( De.g. #2 假設7為較輕的一粒8 ^0 r/ n$ a9 M0 ?# V$ Q
Round 1
4 N1 D3 c: u3 m  U$ [. W/ T1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8$ w- ?8 V7 k% [; I8 @- w

/ l+ n& a3 k. P+ T; |Round 2$ ?+ N& f4 J: h3 C; G, b
5,6 vs 7,8 = 5,6 > 7,8$ Z% E8 b5 h7 w5 P& ]8 ?. }

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7 vs 8 = 7 < 8
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The answer is 7.( b; w; Z8 N: ~$ ?6 \
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e.g. #3 假設13為較輕的一粒
* j( h7 l) V% b! z9 {Round 1
% _+ p6 R/ Q! M/ M" ?4 ]' B1,2,3,4 vs 5,6,7,8 = equal
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2 k% G2 I/ q7 Y3 j9 gRound 2" m) g3 H1 q- z3 {: ?5 b, _
9,10 vs 11,12 = equal9 M7 k% f) q8 F5 G3 ^7 B. u
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No Round 3
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The answer is 13.
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唔知我答得正唔正確呢?!
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5 U8 }# k( n$ D9 N8 a  z. \! O[ 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
6 D7 n7 \" W  t" m" i; pif 1-6 = 7-12     13 is fake9 u3 I/ ?" _! N+ I) p& u

4 b; G4 W7 g/ \3 M3 e. m# uif not
/ s1 T% q6 U4 O, [: F0 \) ]+ k* p% r# c! x$ G5 u; c: @( [
Weight the 2 time
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Suppose 1-6> 7-122 ?& _% C* t! ?* j+ J4 t2 c
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1-3 vs 4-6
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8 v& s7 s, y/ vThen Weight the Third
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0 C, l1 a8 V% m, MSuppose 4-6 > 1-37 g5 m! B! i& I5 v: U$ a" v! W
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Just like the first Step! w' q; M0 {" ~' |  O

2 \# _+ g& ]8 I0 e& O$ h4 vs 5
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" H& n# G/ t9 J: {) Lif 4=5 6 is the fake one
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if 4>5  4 is the fake one $ t  z" R! A6 F) N0 E3 i
and so on......................

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  U: z& @- |( J: Z$ r$ n問題第二步
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2 f' p+ q! P* X) j5 h$ W  d/ ZWeight 1:  1-6> 7-12+ O# @+ y# t5 x2 D  q9 I

5 v6 I: H) C5 uWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6. d+ |' x% O7 A* V* ]* c9 O+ A

3 w+ s) `1 I; L2 K8 p, k9 C/ A你第三步点去搵 7-12 边一粒???1 }" b1 g- W; ]7 ?3 C
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========================================
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* k! a' ~/ I) C/ o! Q' \, G問題第三步& w/ X- b6 c. _% Z% b# X) F6 T

3 C+ s% Q' X- E/ X: R2 ^Weight 1:  1-6> 7-12. T4 B( @  ]/ l" x0 g$ Y
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Weight 2:  4-6 > 1-3 - P! A0 c1 a" X4 B& ]2 @) L, \
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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