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9 j& X  ?$ Z" n' J7 x4 u
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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)。
8 X- N5 J4 u& w6 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？』/ \( g) t# u) u/ X7 R/ W( ^
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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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+ T0 D  Q) R4 u9 O2. 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:
/ L/ w! `  y- a6 H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,
  m2 F; A% o5 @2 k2 ^4 x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。( o1 F; Y+ ^9 L$ T
13.........
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9 n; I6 z6 Z6 Q[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:
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8 L+ _6 D% I+ s! V我以前畫左個chart去答,* d; g) T3 _4 n" \8 L4 Y  Z
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:; h; p3 ~  J. Q' T. l& p
唔識隱藏...已經諗到..

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8 O- v2 Q8 S) `# j( osor !!!....e加改左' F5 @3 a' C* j: y. r* f: F2 A0 L5 M
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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:
( l  |: e$ z$ d9 g( S- O0 X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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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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& ^1 i1 G; L; k9 N; qPlayPlay, Let me know later who has the right answer and I will add points accordingly.  l+ G# S* W# V9 g& [% X  c
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Thanks

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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.  H* s# t6 a6 h; n+ P# M7 Y
1-6 vs 7-12
. `  L$ b0 S5 j! ?* i9 Yif 1-6 = 7-12     13 is fake
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Weight the 2 time 5 N) h$ F, R0 ^  h
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Suppose 1-6> 7-12
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% ~( [" ?* {- N$ ]8 ?4 @4 g3 K1-3 vs 4-6 # S3 Y, H+ [. b; I# [# B! \$ [1 U

- W, H1 c6 q) F# i2 @) WThen Weight the Third
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Suppose 4-6 > 1-3" ^. y9 j  E8 F7 `0 R8 P
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Just like the first Step
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4 vs 5
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& G7 N7 s% M* b5 z# M- w$ _if 4=5 6 is the fake one . N; T( y7 z4 f

1 r, X# s2 ^: U4 i3 Uif 4>5  4 is the fake one
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* `9 v8 {4 e- B& i+ Y2 }and so on......................

hello1997

分3組4隻波子秤/ J$ S* V8 g8 W. t" \3 d  H# \

9 M% W8 q! p+ Z. _, j2 j: @Group A: 1,2,3,4
' Z/ q0 [( e) w1 m8 P* nGroup B: 5,6,7,8
: f5 P: w4 t# f7 R3 G; T# B8 wGroup C: 9,10,11,12
/ `8 N* m9 x4 U4 ^Group D: 13/ h5 N8 p) N7 p* h# \+ X

- v, E. ^% d5 ~Round 10 ]4 o6 J# l- [
Group A vs Group B) L6 r$ A3 Z7 V- R( n
如A and B一樣, 即較輕一粒在Group C or D) t7 W, p! L1 s! \

0 I- A8 [" a) k, mRound 2
# X+ g6 l. `/ t再在Group C拆成:( ]+ {( n3 x3 r6 Q) f/ b- E
Group Ca: 9,10- E% F7 h& V, n0 M! c7 l
Group Cb: 11,12
$ W3 ^, L  I3 A/ s) R& h然後再秤, 如一樣, 即13為較輕一粒.
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" z! C6 p' j9 Z# c  N* S; H1 z; S如不同, 即較輕一組有一粒較輕波子在其中,
" T, k: K8 G& n要再秤, Round 3, 之後便知答案.
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1 E9 |0 d5 Y4 h- ue.g. #1 假設10為較輕的一粒
& ]2 W! t( j1 }' f: u! }Round 1
/ D8 c! O1 L5 T  T, S$ A6 `8 j, `1,2,3,4 vs 5,6,7,8 = equal
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& E) O3 \0 m0 `Round 2
$ N! ]% z  `2 T5 x8 b" o/ X9,10 vs 11,12 = 9,10 < 11,12
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- Y9 \- O9 Q. Q! ~6 Z( r( R1 JRound 3
8 Q% p1 h8 @( [9 vs 10 = 9 > 10: D# r' S) _( p

8 l7 H' [! X. n7 x' @The answer is 10.0 S5 k( H  E5 p  F; h6 z1 A7 x

) J6 ^% ~) N" `8 e5 H  Oe.g. #2 假設7為較輕的一粒. t( A4 W" E0 m$ j1 g1 Z/ r0 H
Round 1/ W$ E; x% c( V9 v4 v- V
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8) f, x% G/ {% O% I- T' s, R) v' S; M" Z
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Round 2
$ }8 t  j9 M# h& B1 W" u  p5,6 vs 7,8 = 5,6 > 7,8
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Round 3: c5 J. d# B/ _, \% P' N
7 vs 8 = 7 < 8$ r" W3 E" t! X2 ]1 v) x8 U

/ C4 a: L3 Y' W6 i+ k* q* d; z7 TThe answer is 7.
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e.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal
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Round 2
8 S( p! B* K, L# B- R7 V6 l9,10 vs 11,12 = equal/ k7 a. F. u. W4 s: c1 u; c

4 t% x9 L5 G) c. z3 LNo Round 32 H0 S. ?/ f& G) D: m

; W7 U! j3 f, |9 P4 s! zThe answer is 13.
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+ O6 A6 B% F* r唔知我答得正唔正確呢?! 5 t( b, ?4 T8 c6 y- E5 o
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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:& C" E/ b$ g% l4 f& g! d
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1-6 vs 7-12# l9 m( I$ j  t; }4 S: w9 \
if 1-6 = 7-12     13 is fake  J( ?# \0 M* T- i* Q

8 a4 b( v8 l3 V& `if not 4 {1 |8 ^6 t& J; u5 Y" g4 H

7 l1 S% r6 Q( BWeight the 2 time # P  Y, R" F- K8 E4 S
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Suppose 1-6> 7-12
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1-3 vs 4-6 4 C! b( l: r) j

6 h- X3 c2 D3 S9 a! EThen Weight the Third
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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 : b8 k( a' y& `; C. h) w8 Q2 t" ~1 O
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if 4=5 6 is the fake one 0 f- r7 M% F+ U3 B+ ]8 y% ~6 R

$ g7 `, i1 e: u/ V+ s/ Qif 4>5  4 is the fake one # x- ?& j. y5 e1 R" D: }
and so on......................

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問題第二步
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Weight 1:  1-6> 7-12% k! D1 P- _) ?. H' F' i8 C* y

' |4 E+ E: \; O) p; M" B- UWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6# @, y2 S  _8 u2 o" U. Y

, `. \; M3 N$ l0 m0 t" X你第三步点去搵 7-12 边一粒???. Z# g% I$ R- S) b
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========================================4 }0 y" X) P( i  e+ V

; ]/ W4 S4 t" _# ?* Z問題第三步$ s" c- g2 x; N. ?3 t
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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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