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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# s/ [, R2 p$ d( X; E$ k: o『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)。
" r* _8 U, H9 U3 J1 U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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注意:
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5 f' R6 O& A/ X# }7 a, R$ |: V1. 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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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:7 g2 @& t4 O# G7 p- o
相信e條題目都有吾少人玩...

! Z% G3 T& G  B我以前畫左個chart去答,5 O4 E" r% R* K6 g$ S( s
等我搵下仲在吾在
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$ W. r" t2 P) A. O; }5 Y3 g5 o當日用左37分鐘答１２粒波子，差７分鐘才合格。. N# E6 A; ]! o* F
13.........
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0 D( G* x: }- l[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:* g% L/ r9 @$ V1 j; H0 _

6 ~* v8 g3 m" r5 c; P我以前畫左個chart去答," y, |$ x0 d7 c' q
等我搵下...

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% u9 h6 z( @$ W% {& ~4 e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:" W# q' H$ d0 P) k% D" f' h' \
唔識隱藏...已經諗到..

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! h8 o! S! c* s# U" l2 ]- xsor !!!....e加改左
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- ]7 E5 v4 @5 a2 f2. 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:# x; e6 u; T& p- Z) x  ]) ?. b2 n
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.8 ^; H  K# Q7 Q1 X8 @, ^& p, a
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:8 @* l8 y7 Z! ?- m

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.1 m0 I2 j& S9 i0 ]
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Thanks

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) v1 E( ~* H2 y8 R1 ~+ r! I+ o不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
; N! d: `! z7 y+ b+ H4 m  @; T1-6 vs 7-12
  [4 |4 v" n% x2 W- n# \3 l0 Dif 1-6 = 7-12     13 is fake0 q! `7 v* z4 B' S8 [9 J
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Weight the 2 time
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1 a: |6 T3 x4 j% NSuppose 1-6> 7-12
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1-3 vs 4-6 ! ?7 A5 {. y* F  h1 g8 I+ l3 S

2 {8 j8 E+ D; x$ l3 J7 TThen Weight the Third
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1 x8 P% y# f' V* TSuppose 4-6 > 1-30 P5 q9 C. I4 j

# ]) r. `; }, M% I8 L  G9 n" TJust like the first Step
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4 vs 5 1 E" @) R- o0 ^& p# p0 D
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if 4=5 6 is the fake one 4 u0 K2 U- P' Z2 i& g0 X1 E
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if 4>5  4 is the fake one
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& q% B" ~, h6 Q; }4 Mand so on......................

hello1997

分3組4隻波子秤' ?/ M4 h2 B2 A/ j

( W( l0 m" f/ Y. gGroup A: 1,2,3,44 g3 |' j) S1 `, \; K
Group B: 5,6,7,82 Z  {3 A0 A; \/ T- g
Group C: 9,10,11,12
, o. e. b! ~1 g" p: r8 L5 b+ W: s/ AGroup D: 138 o( O" q5 [+ ?; ]# e
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Round 1
7 F2 `+ R6 J! g+ e2 k1 E) O1 [Group A vs Group B
; W- `9 T. x4 o如A and B一樣, 即較輕一粒在Group C or D4 r" n6 Y- ^" g9 w/ r& ~

+ ~$ P; A' q, d7 V, V% SRound 2
0 W; c# D# [* T$ T3 X再在Group C拆成:
% O* C/ p0 p: S4 \' C! W- X8 TGroup Ca: 9,107 M# l, r# e3 e3 x& o. F; H
Group Cb: 11,12
! ?' t& l8 ~- K$ K# A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,
2 d! {) T0 k# \要再秤, Round 3, 之後便知答案.' w2 z3 X$ Z5 k$ e# i2 B
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e.g. #1 假設10為較輕的一粒
" W. }, J/ q( T* k. ]& b0 rRound 1* t; ^9 {/ {8 z% T
1,2,3,4 vs 5,6,7,8 = equal
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Round 2+ V% k% y* @+ f; r9 s, O+ X+ R
9,10 vs 11,12 = 9,10 < 11,12- C; R0 J! x% H9 W
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Round 3
1 @# P0 j5 x3 G; M) L5 K4 y9 vs 10 = 9 > 10
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The answer is 10.
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3 _/ x& l$ _9 W/ [0 Y8 o& Ve.g. #2 假設7為較輕的一粒
7 ^" c$ B6 g" s) q( K, }Round 17 H8 z" Y- p" X" c. F  y" M
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,82 P5 L* b/ O6 D5 ^9 ^  H
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Round 2  ~) M5 q7 h0 j
5,6 vs 7,8 = 5,6 > 7,8) A. P. |( l1 T  l& T2 X
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Round 39 C; d4 b& u" J6 {( v$ _- y; A) K9 \
7 vs 8 = 7 < 84 Z4 \  E# d+ A) S9 c& @% b

2 z" x8 R* K2 bThe answer is 7.
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e.g. #3 假設13為較輕的一粒4 b' i3 X8 E+ ~2 }
Round 1" n3 i' ^* U& O2 v$ w6 J
1,2,3,4 vs 5,6,7,8 = equal
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3 X* _* i+ B$ v# S3 yRound 2
1 X3 J* Y2 @: c# X- f' h9,10 vs 11,12 = equal$ Z3 M( }; ]" r% k

3 {' O/ e2 o+ m" S. ]" Q0 W: qNo Round 3
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$ y! U* i3 J2 {( j+ N6 CThe answer is 13.
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( e8 P2 `4 y8 ]! j- r- l唔知我答得正唔正確呢?! : r! _1 m- l( T

  _" E  Q" `7 F, p( z5 x[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:, u0 I) H& `. N" S# y
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1-6 vs 7-12' p& V5 |) F+ e8 g1 o& Z, Y
if 1-6 = 7-12     13 is fake* ]' ]1 W1 M6 q4 i; b3 i

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Weight the 2 time 6 f& k6 \* g2 q/ L
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Suppose 1-6> 7-126 l4 ^% X" N/ p8 L* I3 X$ v- f

9 i! X8 {7 t1 l  C9 _3 R1-3 vs 4-6
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Then Weight the Third" g2 B$ v1 S  L( \! E
3.
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Suppose 4-6 > 1-39 f; T' t0 {3 @/ `' O# B3 G& M2 h

. C9 d" _( ~. `7 r. E; N' ]& AJust like the first Step, a5 i0 P9 u2 t  _4 D8 ?& d' R. b$ H

6 E' I& u" L! B) G2 ]% r4 P4 vs 5
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if 4=5 6 is the fake one 2 r, D/ \+ q5 A3 K/ ?

8 i& s  O7 n4 y* }# rif 4>5  4 is the fake one % G* M, [/ m* r9 ?
and so on......................

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+ ?3 c% c) s9 Y7 ]7 p# Q問題第二步
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Weight 1:  1-6> 7-12
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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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- Z" J0 O. h$ m, _2 |========================================
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* Y; h- d. B  }( P5 N5 _. H4 [7 y問題第三步9 |' q$ X2 T: K# S
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Weight 1:  1-6> 7-12/ g" t. w) h/ O' g

: S/ c: F: ]1 P2 E" ]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