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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* ~. b4 v0 V( L8 [『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 Q. c, q- _8 s3 I* O- [
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？』7 ^! s: Q) ]2 ?+ m- h: q1 ?% l

. a& s/ g! S7 p9 E' f注意:
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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:
$ ^  T; u. s+ B' _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,
' M( b" h, O2 E7 t$ s) h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 B+ u, p2 S- A& J$ C13.........
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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:6 D' p: S3 n, E6 V! A
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我以前畫左個chart去答,
% P% @. i; y& r等我搵下...

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. ]# i& t/ M0 v5 ?+ D3 |6 {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:
: R, A% k9 J3 y# u* O" @6 I: H, B3 F唔識隱藏...已經諗到..

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sor !!!....e加改左( E3 g! Z: R: E+ C' ~* y" H, X

# Q7 ~7 Q$ U. ?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$ q; v- B! ^+ Y) n0 b: l% T2 q

" X( U3 i7 w0 K$ Q[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
8 `) J* W  O; m* s& J+ R8 v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.
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) t; c! t3 y$ u7 [. \Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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PlayPlay, Let me know later who has the right answer and I will add points accordingly./ ^" p+ J& S. k
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Thanks

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+ B: w: L. `( p# z不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
. J) }7 h! F: |  o2 k& e7 I4 ^' }1-6 vs 7-120 a6 k: B5 K. j
if 1-6 = 7-12     13 is fake# _, u- j% O6 a( t6 m3 d
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if not 6 B8 X' f* L0 I

9 p- {: _3 A9 {Weight the 2 time " \( K$ }0 X" T6 s" G

7 K( L, y/ |9 M# x, xSuppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third
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7 N5 _* B; c1 D) W; [* NSuppose 4-6 > 1-3
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Just like the first Step
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# r, H  g4 X$ `& D! j8 F4 vs 5
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1 ^# |8 g& b' rif 4=5 6 is the fake one
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8 O( t' X' b7 Tif 4>5  4 is the fake one 7 [0 y3 m2 S- D- }- y
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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' S7 I/ D  G. @3 \
Group B: 5,6,7,8
! [% F5 X4 K' L1 Q, SGroup C: 9,10,11,128 Y) m# h0 L, f& v  b- m2 }! a. f
Group D: 137 \4 p/ p) I7 W
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Round 1
, v* R& z& N) U8 E8 OGroup A vs Group B; q% O' i, b3 m2 z2 g9 x" W
如A and B一樣, 即較輕一粒在Group C or D. C9 v5 ^" |5 J" B
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Round 2
: Y/ o2 @* n% r. J" g! ]/ J再在Group C拆成:
/ e, i& b. v2 a2 d2 Y! QGroup Ca: 9,10+ k& ]8 c* S, \. D5 O5 R$ K
Group Cb: 11,12
4 W/ G, q5 w0 D$ R2 M* D7 v7 {9 E) v然後再秤, 如一樣, 即13為較輕一粒.
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8 r6 M( z( T0 \如不同, 即較輕一組有一粒較輕波子在其中, 5 T$ e+ Y" {2 h7 O% q
要再秤, Round 3, 之後便知答案.
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+ z& a: Y7 J" k) L8 P4 E& d7 `e.g. #1 假設10為較輕的一粒
5 }  E: w' d/ S) y5 W5 iRound 1
1 d* E6 D. C2 G/ q$ l1,2,3,4 vs 5,6,7,8 = equal
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Round 2# \6 G! L* P! h! b9 s0 k4 N
9,10 vs 11,12 = 9,10 < 11,125 q3 R- N7 u/ `; g: S: j! V
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Round 30 h- S0 N& K- t% W9 ?* I
9 vs 10 = 9 > 108 g0 ^2 M- {) ~- z( I
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The answer is 10.% Z3 E4 B. ~; b7 [# W

/ Z) D. u# |' Fe.g. #2 假設7為較輕的一粒
8 I  q% Y: l4 H6 l: {) j: _Round 1
! M' B& c+ p& A) [% B% d, k1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,85 ]! X9 U3 j. T7 m0 H2 i

# F6 Q" a# t) n( }Round 22 M3 y. v' Y4 {1 a6 N
5,6 vs 7,8 = 5,6 > 7,8
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Round 3
2 M/ ~' b, {. G+ r* _7 W7 vs 8 = 7 < 8& g/ Z$ h8 r% U& L* P
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The answer is 7.6 P. Q6 ?; M2 B

" ?8 }6 [! D. Z* J4 t1 be.g. #3 假設13為較輕的一粒
+ l, V2 {# ~+ s0 B1 {Round 1( s7 m. p0 J2 R- u2 J+ b8 n0 @) F, P' c
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
" h, ?' X: Q, v* }7 t9,10 vs 11,12 = equal4 Z( [! j6 x5 \) _* ^

* z0 m% j9 k) b. F3 n/ m3 |2 T1 q' mNo Round 35 ^" ]0 H% ^2 t2 D1 Z6 m% F2 B

3 {% r& I- {2 s0 w' ^The answer is 13.0 ?9 w" p' v' n
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唔知我答得正唔正確呢?! 2 }1 d& Q- K) v. W6 B

; R! D9 d( J. P& k! W[ 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 7-129 [# X5 n, e- g, L
if 1-6 = 7-12     13 is fake7 e  M5 Z' S- S
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if not 1 t0 z# G8 G/ l7 d+ s% E  K
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Weight the 2 time 4 h! t. h$ w9 _' z, F$ c& j
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Suppose 1-6> 7-12
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1-3 vs 4-6
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) R' J& Q& l( b' uThen Weight the Third
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! G5 P* R# j/ {Suppose 4-6 > 1-33 l/ A* S. V+ l, v' s

) T. r% g; y" S' iJust like the first Step+ u0 G  ?5 _% S( [* E9 G6 o

* v, I, K3 L7 T) m' k9 E4 vs 5
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if 4=5 6 is the fake one
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+ {+ @/ C3 s) e4 r+ t# iif 4>5  4 is the fake one
2 n1 e6 _/ L6 wand so on......................

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0 O( g1 @" y, b9 H/ I" V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 = 4-6
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你第三步点去搵 7-12 边一粒???$ d" l1 Y& |8 ]8 K5 [, u7 P3 |+ }' k
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問題第三步* u( t+ H: z! o; l6 L3 I
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Weight 1:  1-6> 7-12
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& X% ?3 }1 e' g' }  k8 m$ w. f& R3 xWeight 2:  4-6 > 1-3
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2 m- F0 s7 i9 E% [+ ^; h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