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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  O; ]! t+ w: l# F7 x『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)。
- k$ H: h3 `; J1 }3 Z: j. D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？』- D9 Z$ K0 O) e9 |% ?) j

5 j" l8 m" J8 x注意: , V" c' D8 ]3 w, z. N

4 P( n8 r$ @8 H/ `5 h. j9 H1. 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  h: q+ n" }9 Q1 n7 ~

8 ^+ Z0 V2 E8 D. K* l8 ^4 u2 a  x' N5 \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, p3 U7 V' m+ \1 L% p
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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:
/ N# @; X; X; w* k; K8 E5 q相信e條題目都有吾少人玩...

8 ~* z- K( S  ~+ f; L# \我以前畫左個chart去答,
3 ~* m; ^5 ]) c  X3 B# ?) _! y等我搵下仲在吾在" g2 {& e$ c) h9 u$ x# x
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當日用左37分鐘答１２粒波子，差７分鐘才合格。. Q( n( l: m/ c7 c
13.........; a- `2 @. T9 `5 X$ _* [4 }

- a4 ?# [" R" {" D( w[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:& x# y4 }. v, [0 z

* u( G( I" H4 Q1 I+ i. U! l我以前畫左個chart去答,
2 F3 C0 e' T: o7 E等我搵下...

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. o6 t/ S& g/ {4 ~& ~( g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:. K7 x4 P" q2 _
唔識隱藏...已經諗到..

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2 ^% K% }  F# {. c" E& Lsor !!!....e加改左% j0 X" h7 Z, O/ q7 v; ?  R0 y
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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:) j7 w) `, Z% K1 O' q/ V
相信e條題目都有吾少人玩...

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0 p- \' l% B3 A9 A9 jPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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  @) {+ w2 {4 Z3 {, yThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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4 [& {/ `2 A% i& D8 S: CPlayPlay, Let me know later who has the right answer and I will add points accordingly.) Y' B. Q  Y/ t' p) A9 T, ~' j* R; i

8 A" _$ p3 O; g; dThanks

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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

1.3 [! G/ X2 K4 G4 o& _' x
1-6 vs 7-12
" H( o0 e! U6 w+ P9 h  tif 1-6 = 7-12     13 is fake
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Weight the 2 time
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: Y: G- M* U: A7 _* `) X. oSuppose 1-6> 7-12
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+ O! D: v/ D. a1-3 vs 4-6
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  Y0 L4 a5 S/ wThen Weight the Third. l9 S: k# X( M4 X
3.
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Suppose 4-6 > 1-37 p" i# U* S8 M1 Z& p* S: @
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Just like the first Step9 U: Z, Y% g. u, b% `
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4 vs 5 ) R* \( }" P- l9 W. s- V5 N

) W- D. [6 z4 A6 m9 s: R6 Cif 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( _4 `& X. A( J$ m% G. q  ]
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Group A: 1,2,3,4/ @9 R3 S4 E( d- @0 O* T
Group B: 5,6,7,8
' X8 ?+ t' Z0 ~5 XGroup C: 9,10,11,128 N& h9 P, _2 w- v2 z
Group D: 13
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Round 1- t+ z/ G1 u1 u- b; I
Group A vs Group B
8 W4 f/ L2 s) ^5 {2 V* U. t如A and B一樣, 即較輕一粒在Group C or D  Z/ d* s: a/ g6 B$ n1 u! I& Q6 C. ?% i; B

* U3 C9 T& U, l3 r: B; YRound 22 L! w9 @& |3 e; n
再在Group C拆成:- u- A# n0 M9 o1 p
Group Ca: 9,10
' L9 S! ^; ^0 z1 {) F* B8 @, b0 f4 G# QGroup Cb: 11,12
8 X$ R) Y$ Z0 C' G- B! u' J+ _然後再秤, 如一樣, 即13為較輕一粒.; X! k: f5 l. I5 |

6 e- Q$ p1 C% d$ P如不同, 即較輕一組有一粒較輕波子在其中,
8 O: R& M* ?$ `! i$ W6 ?$ a+ M0 o要再秤, Round 3, 之後便知答案.
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& X0 }* s7 `4 C( A. He.g. #1 假設10為較輕的一粒! _8 {/ e3 f! ?: U- Y+ Z  A+ J
Round 1/ t) {9 X+ M3 P
1,2,3,4 vs 5,6,7,8 = equal' v1 i) n" F4 q8 z& `/ j) F

* n. _! l& ~* |# _* c  qRound 2) s) h9 `( d4 v; a( @: H5 _  [: d
9,10 vs 11,12 = 9,10 < 11,12! w  Q/ o/ d7 d

: r  Z+ Q. S$ m9 ^Round 3, T+ O8 m2 w1 K; \8 W
9 vs 10 = 9 > 10
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! |* r3 J, R: f; `# G8 h0 i8 GThe answer is 10.. C1 S" H/ X- m, \
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e.g. #2 假設7為較輕的一粒3 M% F9 @: c* o1 h9 [
Round 1$ o" n' J# _! B; R
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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( F, K# o) `6 P) H" Y" @Round 29 F6 x5 O& C2 }1 \# T- k
5,6 vs 7,8 = 5,6 > 7,8, M* Y' W$ \7 t7 Y
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Round 3
# g. v4 i2 L/ I: U7 vs 8 = 7 < 8
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The answer is 7.5 }. Z' ~% P) U& O
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e.g. #3 假設13為較輕的一粒8 \$ E- u' N  G& F
Round 13 y: _5 f/ o9 g# j. j
1,2,3,4 vs 5,6,7,8 = equal
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Round 2& m/ y9 h$ s: y% h+ x$ y( |: R
9,10 vs 11,12 = equal
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No Round 3
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The answer is 13.
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唔知我答得正唔正確呢?! 0 r: n* w( Y) e+ y3 C" t
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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:
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1-6 vs 7-126 A- b5 w1 @8 |9 q7 p$ ^' y/ ~
if 1-6 = 7-12     13 is fake! t3 u  R$ }; B
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if not
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Weight the 2 time
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6 [( R4 g3 b8 x& R/ tSuppose 1-6> 7-12
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3 p6 Z( O3 r# P; ?. f) R0 c1-3 vs 4-6 " Q1 {6 t0 s/ [

  P& B9 _( V, B( \Then Weight the Third
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1 j+ k5 ~+ }0 O. t! w+ rSuppose 4-6 > 1-3& M" Z% o, S& b

7 x9 D! K, E( N/ @: l! z9 ^Just like the first Step& e+ V: {5 }& ~: I

2 H* N/ D4 \  T1 H& R. l$ f  l) S. Z4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one 1 M8 i8 f0 \$ {3 p& z8 n- w
and so on......................

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問題第二步
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Weight 1:  1-6> 7-12- ]' y) r1 g5 A3 x
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6# c8 j- a% K2 S  \7 F2 u
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你第三步点去搵 7-12 边一粒???
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========================================! S9 X& C. ]7 p5 E
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問題第三步
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: X( l) ~/ b% Z3 t8 TWeight 1:  1-6> 7-12
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! W* V+ _  y( n% f2 a, J: RWeight 2:  4-6 > 1-3 1 V- U* J0 O! M# t* Y! U

/ \" `% N$ \5 d9 y5 |  f" D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