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  {  |8 c6 A, F8 _. |
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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)。
# a3 x  S$ E  c$ E2 P4 D4 p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？』  c7 Z1 |" y0 F" B& G

- P. }  G' s' w5 S注意: 0 O* v8 o8 A. a. D. ~: E! M) t3 v

: f+ m2 }- l* a2 d# ]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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* I6 R" G5 U2 J% _! m6 b% X( S[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:) [4 v% S" P4 `, E! M/ u8 F' n! j, I
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,
0 {- d3 h. k" H, S# i5 V9 m等我搵下仲在吾在* ~" K, K9 u& J8 n
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當日用左37分鐘答１２粒波子，差７分鐘才合格。- B; q) c0 U% K. K  J" d0 E
13.........4 S6 C4 A+ q( o" Y9 s- o
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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:  D" V8 q( E7 _9 s! e$ b

: t0 c. n3 ]0 u: a3 K* h我以前畫左個chart去答,2 V( Z4 R/ A8 H9 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:
  G+ `0 @$ q  Z: d4 F/ Z1 O唔識隱藏...已經諗到..

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sor !!!....e加改左$ C1 {0 ^0 H1 |: B* X! {2 _

+ |3 B& D1 \& U8 z3 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# u4 B% s3 V; _0 g  E8 X) i5 g
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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 s& Y1 K+ l: i' I1 |) U( q相信e條題目都有吾少人玩...

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6 n8 S) f" ~6 v% r9 X) ^6 \& |9 @' jPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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. [+ o) W) D/ A: Y" ZPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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Thanks

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; F* a  ]% J. r不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
; t" k6 W) X5 G- ]  E3 \* x1-6 vs 7-129 e0 l' q6 l1 ]8 t6 b3 Z$ J
if 1-6 = 7-12     13 is fake
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if not ! S9 Y3 n" h# i
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Weight the 2 time 7 t5 E  F# n! v" C' }# K
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Suppose 1-6> 7-127 @  v# g. |4 n- j9 ~; C
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1-3 vs 4-6
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Then Weight the Third
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( Q7 Y: X! z7 z3 d' w  k$ a# iSuppose 4-6 > 1-3
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Just like the first Step8 o  p- o/ Z! V1 Y" V
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4 vs 5 ' r, h' ]! O! ?

% D' y. p  h7 P# k* m) dif 4=5 6 is the fake one
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/ s* |9 H% O2 C, Rif 4>5  4 is the fake one 4 i4 t9 j* l7 ]0 V0 j7 `
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and so on......................

hello1997

分3組4隻波子秤
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3 a8 N8 Z5 Y( I- l4 `( eGroup A: 1,2,3,4" x* l; w8 Z: C5 q" [1 L+ g; Y5 Q
Group B: 5,6,7,8, a7 f8 t4 |; \
Group C: 9,10,11,127 z, y) R* l4 {2 P% ~: c* x
Group D: 13
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Round 13 h8 T7 L9 ?8 |/ L2 l1 I
Group A vs Group B
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Round 2
0 s( `( s( z+ g) h2 R1 P再在Group C拆成:3 l8 ~, S+ `" u" x7 }7 X: I3 w
Group Ca: 9,10( T7 b* L' E6 A2 ^* d7 P
Group Cb: 11,12) M/ M4 [6 U1 w
然後再秤, 如一樣, 即13為較輕一粒.
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! v  M1 ?8 o" j& [, s0 r: l如不同, 即較輕一組有一粒較輕波子在其中, ) Z' I; t' ^3 ~  P
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. L- }1 ^" G! k2 `- o/ |) R
Round 1! K8 `$ d! q6 i6 h  {6 a) }
1,2,3,4 vs 5,6,7,8 = equal
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Round 2; T4 m5 a4 c- G, o
9,10 vs 11,12 = 9,10 < 11,126 X% O1 Y2 |" k' M( ]2 Q9 _/ x
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Round 3
  v3 W" x+ U$ o, s' G+ ~& Q! B9 vs 10 = 9 > 10* G$ o5 @" |( x8 N

7 }0 Y6 h: x( m+ v. _: [! S6 XThe answer is 10.
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* K; c, a3 S" m; H$ h; Ze.g. #2 假設7為較輕的一粒- x( }: _0 e1 b* c
Round 1
+ y3 b1 D+ _  Z9 j* ?* Z) A8 Z1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
$ b# O/ W3 [' j$ j& u$ c" K5,6 vs 7,8 = 5,6 > 7,81 k: n  }$ }# ^3 M

5 X  k* @+ }3 Q4 X6 e1 RRound 3
" `; \2 b" g$ G( h7 vs 8 = 7 < 89 e, B0 m. ~9 ~- o$ u
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The answer is 7.
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e.g. #3 假設13為較輕的一粒6 S" f0 D+ R' l! b$ K. }# t
Round 1
0 ^1 a9 z. l: |* z$ ^1 f0 G  z1,2,3,4 vs 5,6,7,8 = equal
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' }4 L2 i$ R6 c' Y' J' V) cRound 27 ^" f4 }6 R1 @( h4 `* B; N
9,10 vs 11,12 = equal
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No Round 3
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The answer is 13.: d; `& ~) H- w& v

- D2 g0 n7 k5 U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:. P1 _, t1 l9 `% @! t, h
1.
& t) ?' A; ?: l" w* X3 C! o! w1-6 vs 7-12
4 M+ ?  A( T9 c( iif 1-6 = 7-12     13 is fake1 g+ @! [; K6 Y+ X" v
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if not
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Weight the 2 time
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Suppose 1-6> 7-12: a' ?- N- p) T5 t! v1 r$ w

4 u8 r  M4 N# k9 C1-3 vs 4-6
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Then Weight the Third
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Suppose 4-6 > 1-34 G9 p, c4 n2 w7 `; R
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Just like the first Step. E. q" P- P  |8 x; o/ u- ?
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4 vs 5 9 F+ d$ q0 _  p8 `+ r# e4 U, `
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if 4=5 6 is the fake one   c$ b4 f- \6 j( C  Q8 J

! I* b" i) Z, s3 v( P; u6 i+ C  @if 4>5  4 is the fake one
$ `# C& D9 u, |5 {$ F) P: Fand so on......................

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# t( g3 K% e+ E9 _! r% }& I/ ^問題第二步5 `- e1 {) f) Q
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Weight 1:  1-6> 7-12  o6 l! e% [8 P
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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! A& B1 t2 T! a
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; O3 J9 j9 N' f0 q: k. h問題第三步
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 6 p3 L) h) j( h  m* Y7 T: Q% `! B2 S

" P! L/ \. P: p8 X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