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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『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)。
! D* h# Q8 o- _/ {8 o8 o; g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？』& `' I/ t; s: p& S. M* \

/ {# s4 y  a0 U  C. N; n( m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3 U) b( U" b5 F/ O
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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:- S+ F) S% `5 M
相信e條題目都有吾少人玩...

, o8 O7 j+ |# e. U我以前畫左個chart去答,7 u4 v& c! Z7 G4 g& L2 A1 x: k6 a
等我搵下仲在吾在
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, G/ F9 O0 s$ N, t1 G當日用左37分鐘答１２粒波子，差７分鐘才合格。/ E+ s7 j% H; E! T' s; T
13.........
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- Q8 _; \( F2 B( f6 L# M# g[ 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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9 h4 H  @  t- d: y2 C9 k1 y* Y: g我以前畫左個chart去答,
" I2 i: t9 E( b' f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:
4 x( @3 D1 e! q. }: v. S: X4 o" U唔識隱藏...已經諗到..

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7 v3 g; R" k+ I+ G" }sor !!!....e加改左
5 a8 @' T6 U; L9 j0 o1 [1 Q0 ~. c8 h: h' t8 r+ u% T$ ?
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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& ~2 g/ b! d& L6 }& j% H$ X6 c[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:3 u% N! x0 c) ^9 p9 v& ?( _6 a
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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6 R% T  I1 O- m6 _1 K9 R- [Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:' z. g- i8 U  g$ N

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1 Y- s8 X8 ~: I. X2 {1 |2 E0 Z! IPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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7 c+ n" n# `% `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.; \+ \7 a5 x) S
1-6 vs 7-127 `7 n' f. X6 S/ l& t! Q  G
if 1-6 = 7-12     13 is fake
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if not
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+ u, _- X; `  O7 }6 y4 t* hWeight the 2 time ) T* w1 N- m! x: i9 t6 y

! u0 q- c4 D# i4 @4 V5 T+ [& ~# N6 |3 HSuppose 1-6> 7-12% }9 f- }" |; i

5 P: t+ H* D! c8 U$ J/ p: B1-3 vs 4-6 $ j  D/ g5 D: M) x# L

( d7 s$ i! h, P$ v: y5 U0 XThen Weight the Third5 R/ m9 n( w5 |$ C1 ^) o8 K/ q
3.3 \( z$ g  k. W
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Suppose 4-6 > 1-3
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Just like the first Step& _3 ^+ ]# |- Q
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4 vs 5 7 h4 u$ o& N: ]9 u7 e  p7 i

9 b% F7 u- h8 t, k! g- @9 dif 4=5 6 is the fake one $ b% J8 h! A- s% ]) k

/ A: i; [7 x( ?8 I) c, Gif 4>5  4 is the fake one
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% a  @1 ^1 a* Mand so on......................

hello1997

分3組4隻波子秤
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Group A: 1,2,3,4- P7 R5 x% G$ ~; w* r8 x1 F2 m
Group B: 5,6,7,8
+ [* ^: ]* a/ d6 o+ }, a1 f  kGroup C: 9,10,11,12) H2 r  a8 y. K' U" p. y
Group D: 13
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# x- x8 J/ L& q8 m, k- \  z! xRound 1
) W/ R0 ?2 U8 Z3 ?Group A vs Group B
+ w  O3 T$ g3 U- T$ V1 h9 \如A and B一樣, 即較輕一粒在Group C or D
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' Q3 l4 T. Z$ a  a4 w6 v& K( oRound 25 |5 e/ M& `8 {
再在Group C拆成:  J: U# ]8 G5 v4 H! J! e
Group Ca: 9,10
$ E  B: r) S* i) jGroup Cb: 11,12
" x) G) h4 Y. b4 Q' U5 k然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, + o- J6 Z8 q; {$ N& o
要再秤, Round 3, 之後便知答案.
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" n5 G% }# ^- O" m/ J8 Oe.g. #1 假設10為較輕的一粒) d# w% P# y  ?- l" m$ q! X
Round 1) @) D2 G+ B2 N. e) M
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
- B. T( e5 l6 U9 W9,10 vs 11,12 = 9,10 < 11,12
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0 C2 T* m: @4 L2 w7 g4 V, s% LRound 30 F/ H1 ]) A' }
9 vs 10 = 9 > 10
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$ Z0 }5 o3 a6 T- t9 I  |9 TThe answer is 10.$ s$ P% X& V" o: Y) q$ j0 I3 o3 C
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e.g. #2 假設7為較輕的一粒8 i( o6 ]* K3 Z" U# L
Round 10 C; \( ~, K" T% T3 j# [4 T1 O
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2* J) `9 u3 v! M# T: v
5,6 vs 7,8 = 5,6 > 7,8: H9 q) ~7 _( i! g

* z) O7 q' B1 h  dRound 3
2 H" W% R, F  |; U; u* }2 n7 vs 8 = 7 < 8
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7 Z7 n& |9 O6 [0 D/ ~. N1 p: X$ VThe answer is 7.
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e.g. #3 假設13為較輕的一粒
1 O7 y! K9 _0 k2 N+ `; @6 VRound 19 u% o7 X; n$ @" F
1,2,3,4 vs 5,6,7,8 = equal
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; _6 h% [* n$ s/ gRound 2' C1 ?8 @$ D6 I- q( F4 \
9,10 vs 11,12 = equal2 O8 p, _0 ?) ^( E5 O" `
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No Round 3
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% h% @/ t/ I- I' d" y: XThe answer is 13.0 y, d& E# t! i
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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:7 n$ l4 N! t$ N. t0 B3 N$ J
1.
! J% ~' W* [8 b' A" }: S, @1-6 vs 7-126 S+ h' a! |/ G' Z) Q  @/ k' V
if 1-6 = 7-12     13 is fake
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if not 4 G7 \* `2 i- f  v9 }! ]8 c

# K; S. y7 N1 c( m% `Weight the 2 time
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) _  g0 Z' d& `1 \4 W! j  w7 @Suppose 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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Suppose 4-6 > 1-3, K+ Q8 ^- W! A0 C9 C, b
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Just like the first Step* d% X6 A( s. {6 `  X# l
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4 vs 5 + {% C- A; h- p/ u" a( `- I
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if 4=5 6 is the fake one " Y0 T5 M* v* I7 i3 g0 w
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if 4>5  4 is the fake one
: n- e( y2 J" `and so on......................

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9 h% g! F9 l# A0 f- ~; W+ T! O問題第二步
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% h. k+ ?" C4 ^+ a3 mWeight 1:  1-6> 7-12( y+ V* `. X, j; L8 _  S7 ^' ^6 Z
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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???
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========================================
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/ P+ B; W6 s) m6 z4 Y2 M' s問題第三步* t2 p3 T1 G  ?) U

& q/ K2 f( j" j2 r* B9 A, MWeight 1:  1-6> 7-12
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/ {5 E$ |* y0 W4 R5 IWeight 2:  4-6 > 1-3 1 F) g/ ^0 [' z; r# _3 A
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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