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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, M$ F9 U' L! H( S( {『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)。, [; K7 p. F& T3 ^3 Z( Y! ]9 ?
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？』- z7 x8 p; U, I  O6 O' `/ G

- s9 [% k" Y$ R( n; _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' Z" ^6 q7 r+ s$ j% v9 G* Z

: W7 @; c- s3 M( j4 t2 e& T2. 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& {* V) x8 R* V' b& 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:% l; v; }, ?0 S; P7 _
相信e條題目都有吾少人玩...

2 t" k# [7 a2 K9 V& e8 {我以前畫左個chart去答,
7 Z3 y) m4 c9 R' X; O等我搵下仲在吾在
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6 B$ `0 H0 z4 h/ y7 N當日用左37分鐘答１２粒波子，差７分鐘才合格。
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+ v" O4 O6 N0 N3 n4 W$ R: c- e[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:, R7 u' F6 E/ r' v1 @; z" a

# I6 x- R2 O! X% T/ s4 o我以前畫左個chart去答,6 g! p) R& i( U. @$ Q6 H" I
等我搵下...

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8 e& Y0 x6 [4 k+ `: O  h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:  U+ N3 z  J' u
唔識隱藏...已經諗到..

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sor !!!....e加改左9 g: Z: E7 X. L. z3 g
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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9 d8 b% D% F  s6 e
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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 E" S& p% Q/ q! e' H1 o& [* m- D相信e條題目都有吾少人玩...

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6 k+ A: e$ W1 R4 _$ O! E( J6 f% nPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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9 n/ p, X) ?/ N$ g& XThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:* y% ]1 W- z6 u
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* R: x! S" D, ]$ y' O, W- s$ _PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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' t8 _7 x, F; {; o: N, MThanks

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. o( |$ P0 b5 q7 F9 a不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
8 Y7 L: f0 J  N1 K7 v9 ]1-6 vs 7-12
4 b/ |6 \0 M# a5 Y/ r. sif 1-6 = 7-12     13 is fake/ z( V8 Z1 a! F% B# y
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if not
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3 A; ^& i8 {& U1 o/ @Weight the 2 time * n" m. K0 `, C+ X
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third. M: `7 {' ]: w$ K( L
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Suppose 4-6 > 1-3
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Just like the first Step
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4 vs 5
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7 o! \; q! Z, \% _. Pif 4=5 6 is the fake one
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if 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤2 J; A$ z- Q; Q& m. [' z3 m
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Group A: 1,2,3,4
4 f5 a$ L+ Z/ Q$ I1 ~Group B: 5,6,7,8. k% k4 `- U0 \# X, L
Group C: 9,10,11,12) |: E- U& `2 e0 z2 h
Group D: 13, e  y( s! j1 K/ i

; \7 q$ P4 Y; \( L9 m) Z$ PRound 1
& q( j$ f( C4 E# ~2 ~5 VGroup A vs Group B
- s# ~9 I; r" Y3 h( g/ W2 B如A and B一樣, 即較輕一粒在Group C or D; G# x8 M0 a& y3 C- X4 o

4 ^" l1 h7 A, V% J$ m% C+ A  iRound 2$ ~. [9 [1 j( l- a' i
再在Group C拆成:
) D% F  k3 k0 t* r! `Group Ca: 9,10
, m, F. d6 j0 Z7 aGroup Cb: 11,12
* Q. [- a% A( p然後再秤, 如一樣, 即13為較輕一粒.3 m# i7 |" y; z& A
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如不同, 即較輕一組有一粒較輕波子在其中,
4 E0 L/ n6 O8 K要再秤, Round 3, 之後便知答案.
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8 V% ]- U5 V+ I% B% p# ue.g. #1 假設10為較輕的一粒8 f7 S! U; m6 Z2 }
Round 1; y2 p7 i6 {" o& o5 n0 Q
1,2,3,4 vs 5,6,7,8 = equal$ G/ _( \! z- u( H4 K6 H/ F& R! }
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Round 2
2 G1 M3 `7 h. O& F7 P1 M+ A! m- e' h; q9,10 vs 11,12 = 9,10 < 11,12
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" m1 Y  {& T* _: a: C; ^- p5 ERound 3
* z' X& o; x. s7 k9 vs 10 = 9 > 103 ]3 d8 P, K* f& w

$ m5 Q! E& p' N* P. hThe answer is 10.
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e.g. #2 假設7為較輕的一粒  D# U& Q4 O! h( W* X6 x
Round 1
; x( v! S/ \2 r, w. \1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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- f: ~  ?7 |9 c" rRound 2
( a# {4 {7 h5 {! v* A5,6 vs 7,8 = 5,6 > 7,8
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Round 3
. e& [& C4 N/ D3 n  ^7 vs 8 = 7 < 8
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% v' C: p2 H/ dThe answer is 7.: u* ]( V* j5 _( ~  W( [

8 \1 B7 `2 Z) O( W" L$ p, r( [e.g. #3 假設13為較輕的一粒
0 Z8 z: L; C( v$ P7 F7 w+ K: \Round 1
2 ?& X$ d3 C2 W/ }: A1,2,3,4 vs 5,6,7,8 = equal( J, C+ [) j* |

; s+ T+ @) ~- o) h) H; P  Y1 yRound 2
% b: G) i, a" a/ m5 ~4 T2 U( Z9,10 vs 11,12 = equal3 X1 x+ J; M3 G9 ~

: _& B" E' b0 ?3 _No Round 3
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' i! ^( v! C' `6 e; OThe answer is 13.
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, `0 R5 n4 ?& F3 P5 W/ Z) A唔知我答得正唔正確呢?! ) Y+ ]" o$ ^- Y( J' u3 t+ N

5 [6 n1 \3 l9 m; p( q% ~[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:% `9 ?  f2 N# Y" x: f5 K
1.
0 A5 f( u1 j* ?5 {+ y9 O) X$ h6 A$ b1-6 vs 7-12
) Z0 f% B# ?4 _8 `) v1 e2 tif 1-6 = 7-12     13 is fake
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if not
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Weight the 2 time ' l  f/ C; ]* h' G

( C  |/ @" _# H: M+ N- F5 v3 x# zSuppose 1-6> 7-128 d1 V( P3 S7 T3 `( ?
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1-3 vs 4-6 ' f- U# d& O" H& g4 v$ z
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Then Weight the Third5 r2 T+ G6 r) b- |
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Suppose 4-6 > 1-3% |+ N7 T, t' o

& [) Y0 M+ M( [+ h: `% ^Just like the first Step
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4 vs 5 5 v  ]5 M1 r  C7 |/ T& A
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if 4=5 6 is the fake one * d  }3 ^6 B# i+ k* P& t- M
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if 4>5  4 is the fake one $ r" ^8 X- D- X- w1 B
and so on......................

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3 l+ n" w( c: j; G$ ]/ A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' \: e' u5 a# v: L0 h9 [
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你第三步点去搵 7-12 边一粒???9 R# j- f% d8 s! |

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/ S" G9 n2 V+ c& T6 O- K, T問題第三步1 P; M1 Y6 H7 _  k& |
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Weight 1:  1-6> 7-12$ k4 x5 Q1 u4 U* ]: M
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Weight 2:  4-6 > 1-3
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" E) y0 b& \7 V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