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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' _( e! }/ p) M, y  U$ |『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)。
5 ~% \0 n; Q4 O# b# H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？』
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" o( R2 _( Z/ ~注意: . Y, x4 }; J$ u6 L$ z

; U$ [2 O% f, n% M4 }; r" X7 e1. 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: ^$ k# A" b2 e- N
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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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) \; M9 [7 l: S+ v2 u[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:) U8 q- P8 b: U/ l9 g; Z
相信e條題目都有吾少人玩...

, }8 [8 [+ ?; A+ T! ]( d" Q我以前畫左個chart去答,( G. ]+ c3 D  C. q3 s* v# @
等我搵下仲在吾在0 F/ ?$ [' \$ c

1 ]" u5 Z/ x, I" F6 `0 Y當日用左37分鐘答１２粒波子，差７分鐘才合格。3 I  q: G( v( A
13.........& I5 I0 O/ r# {- @! _) Y* X& `; q
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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:
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我以前畫左個chart去答,6 m$ ]( y, ]' R0 S2 s! H
等我搵下...

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3 }6 s! E% h; ]9 T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:/ N) E+ d" U) f, B. `3 Y6 J& W
唔識隱藏...已經諗到..

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sor !!!....e加改左: d6 t) J6 s! I0 ~
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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' a1 V5 ]2 ^4 W# v8 P! A
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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:! X8 X' ~3 [$ _3 {. l
相信e條題目都有吾少人玩...

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$ m1 {6 f7 Z9 d' Z% jPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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/ }  @% [* @% U5 ]" l7 z" gThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:  b, r+ _+ @& }4 a- T, U1 `0 X6 u

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' e' z& R+ @- C. EPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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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.
8 f$ `+ y/ ~0 }& Q& s8 M, ]7 }, Z7 \0 S1-6 vs 7-12
8 ]7 T& a/ K; _2 O( u, S! v$ {if 1-6 = 7-12     13 is fake7 r% ~9 s% Q# p( U
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if not $ `8 I! i  I& ~. q

7 W; l! x' H/ g0 A* L% @4 M/ v3 E% cWeight the 2 time 1 O- n: ^# ]  K) S  D3 p5 P

7 n2 ^% k# l; h( C% [; R1 @Suppose 1-6> 7-121 |  [- o/ ]0 v$ p; I6 Q7 R

8 w, ~/ k& v7 T6 f! ]2 u$ B1-3 vs 4-6 ( X. o, Y4 u0 w7 ~+ Y! g% W
+ ?- }! q  D$ m$ s% T6 H2 O) |
Then Weight the Third
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Suppose 4-6 > 1-35 c+ l. z+ s; l$ m
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Just like the first Step
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3 j  |$ i" `1 u' b6 Q4 ]5 y' U1 H7 ~; `4 vs 5
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if 4=5 6 is the fake one ( ]0 s& o5 `3 z4 |9 i" C
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if 4>5  4 is the fake one 1 ^9 m4 d/ d; X. Y, Y8 }
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and so on......................

hello1997

分3組4隻波子秤" g& d( V1 ^# A/ u/ v8 |) }

, H, G% R8 y9 d% o( q  ~Group A: 1,2,3,4
$ F2 a5 `, \) b) ]! T5 ]Group B: 5,6,7,8$ K! k* E" m* z# @4 x  a7 L
Group C: 9,10,11,12
# @9 q# m( ?6 L* F! sGroup D: 13
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' M8 j5 G' D1 h1 Z4 T9 W( [# URound 10 O+ C) p+ S4 ]* C5 d
Group A vs Group B
  t9 _/ G' Z/ Q0 n+ s如A and B一樣, 即較輕一粒在Group C or D, h9 Y7 _# X* _3 T

' E* h, ^& f* ^5 n7 V! d' R$ KRound 2
. l0 a9 G( R: e2 c' t再在Group C拆成:
/ I) p1 K) g$ n0 ~: pGroup Ca: 9,10, |. A' h, F. Y; ]7 E% N# h$ P
Group Cb: 11,12
" Z$ [* Q- Q  Z( S$ b2 ^# u然後再秤, 如一樣, 即13為較輕一粒.
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+ V3 Z& d, r; u! w* q+ R% ~如不同, 即較輕一組有一粒較輕波子在其中, " v) H. P* m: Q( w  i6 `6 {
要再秤, Round 3, 之後便知答案.: k; |  `6 Y% n$ _5 R9 R4 q. W

$ t& J. a; q: X  C9 N# m3 oe.g. #1 假設10為較輕的一粒/ v7 K- c/ N3 b: b  c, h: Z, C  q
Round 1
" e) D$ u! Z: @, t0 M5 ^; w1,2,3,4 vs 5,6,7,8 = equal5 H5 r/ T% b, X* L3 x) E1 y9 H

# K- w$ b/ ]' h3 m; ?+ xRound 27 `7 ]) P6 F; l, e
9,10 vs 11,12 = 9,10 < 11,12
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Round 3
' z6 d0 I& _4 q$ A- p8 z9 vs 10 = 9 > 10
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3 e9 p1 H& y9 M2 D8 `The answer is 10.' m" w$ e$ P) D0 i$ H3 i1 j. `

" C0 P" u, I  N$ O5 ~e.g. #2 假設7為較輕的一粒
/ b$ [5 p# k+ x4 y8 @Round 1
  a* N7 p) [) m* R0 ^1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8* T# l4 [: I# h
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Round 2* y  w  f7 p1 W" @& n6 g( X/ A% ?
5,6 vs 7,8 = 5,6 > 7,8$ A- W. I" z3 c$ T" I
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Round 3* M" e( ]  D/ p  X; D
7 vs 8 = 7 < 8
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/ R8 {, n: v) h" O$ [3 O8 GThe answer is 7.
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! E8 D  J  M* [4 F* X- U$ [9 We.g. #3 假設13為較輕的一粒
) c; u, z8 `" d: B% U* ]  p* PRound 1
: V% X7 J( K( B( ]# |2 B1,2,3,4 vs 5,6,7,8 = equal* X8 y8 p2 K9 a8 S8 o

% ?+ m& z5 ]6 c4 s5 qRound 2
* J# z+ d# L: y5 A( @# ?( H9,10 vs 11,12 = equal
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No Round 36 N: r! \& y- V9 Z7 l
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The answer is 13.
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唔知我答得正唔正確呢?! & s7 [8 q" y% l5 ^; k

9 @3 M& ^* Z; n: 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:5 y0 k4 d3 R& x
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1-6 vs 7-12
& l1 ^4 `. J; S! x1 Jif 1-6 = 7-12     13 is fake2 C$ d/ X" u% }5 x: ]+ ~5 J
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1 r7 a$ x, J  D; j: SWeight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6 / g+ }! O* |3 o2 j' |
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Then Weight the Third* ]1 W/ k: a7 }5 n
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4 r" }" e% W" l% h: TSuppose 4-6 > 1-3
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0 K. P$ ~$ n2 T" [5 M, A- D7 CJust like the first Step7 B' `" I) g. p- ~- _' g, j! e
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4 vs 5 7 A$ o; i  O! e' R8 O% a: a

' Z, d0 h. P! C* o- bif 4=5 6 is the fake one
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if 4>5  4 is the fake one   i8 s4 ~/ D+ {0 C8 Z+ l9 g
and so on......................

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問題第二步/ n* M" h( E; b4 {' _" a# L
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Weight 1:  1-6> 7-12
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4 i8 v) q4 Y8 ?$ u" d2 r" VWeight 2:  1-3 vs 4-6 , if 1-3 = 4-66 }# b; r- D4 T
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你第三步点去搵 7-12 边一粒???6 C& c0 i. U8 Z6 o( O8 t

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問題第三步$ i. {7 ?6 ?# ], h1 B& N# o
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Weight 1:  1-6> 7-128 X' m" h6 p0 F7 T7 [8 q# P( y" p
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Weight 2:  4-6 > 1-3 ' y3 j" J( I& D2 y3 _( K6 {+ `
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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