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)。2 J8 W5 L- {) r7 A
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 n* g3 x' g: L+ w" D1. 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8 e  y. ^0 r9 {' P% Y% C2 P

5 a. ^- x; P5 f3 @6 Q5 M  l9 e2. 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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- `! Q% z) }0 @[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
$ v# A3 J0 ~7 q1 B+ [4 n! A+ a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,, [7 V  W0 l' p/ [. h& D
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。
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% X4 L  O9 h$ _[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:2 F; t6 J! j, e. [3 w  Z3 r+ j% _

$ _0 _* T9 @& _# e我以前畫左個chart去答,
6 @" |+ g. \# d  c$ Q1 L2 x6 B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:$ D0 }0 I( d7 F/ \* }6 K! ]
唔識隱藏...已經諗到..

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sor !!!....e加改左
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7 c4 b1 s- [* q! ?" m* M3 ~9 k2. 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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* U2 g" r; L+ m- K4 Q! t[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
) D0 d9 `, _* g& V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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' {5 J3 o8 M( K# i$ ?Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:% N; w# x: E& }" a- O2 e0 w5 d

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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

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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

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1-6 vs 7-12" r/ @/ M2 ]" s4 D. W0 V& T
if 1-6 = 7-12     13 is fake  c& D  d% W  W' k/ p
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if not * l# m, |! Q1 K5 p9 w
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Weight the 2 time % f4 p  u  T# u: }, J- S( J; h
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Suppose 1-6> 7-12
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! d, n2 @" w% g1-3 vs 4-6 , Y# D/ ]* |1 e* k+ y

8 G! K# j) \, r: |( rThen Weight the Third
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* {& A7 @1 s$ ^9 v5 b7 I7 ISuppose 4-6 > 1-3
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Just like the first Step
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! p* s! V  n4 i. u3 H4 vs 5
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* F7 f  ]7 w; D3 \# o4 A  v. Nif 4=5 6 is the fake one " ^& Y  ]/ U/ x- ?: Y

& ]* V4 h4 E0 b$ Uif 4>5  4 is the fake one ' Q' C3 E. {3 a
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and so on......................

hello1997

分3組4隻波子秤
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4 \- @3 x8 o( e9 \2 o7 IGroup A: 1,2,3,4
" a6 i$ g. u4 Q9 Y% pGroup B: 5,6,7,8
) i) h  J8 z$ v% x4 ?3 {Group C: 9,10,11,12
0 A" D& y5 }1 E9 {4 \+ f% vGroup D: 13+ z; g# L3 ?( o& E

0 G( U+ e) w, b' t1 r" g! U0 J2 [, URound 1
! E  ^% ]3 J9 j( Z2 WGroup A vs Group B8 a1 d1 [0 h/ S* [' w6 j
如A and B一樣, 即較輕一粒在Group C or D
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Round 2( @$ Z9 n/ m: I0 \3 K4 \1 e
再在Group C拆成:
1 @2 e8 h  I8 \0 b6 YGroup Ca: 9,10$ q7 Z6 G, e* G# N9 L$ @/ X
Group Cb: 11,12: @; _* J* [6 g4 H6 A9 T; 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,
% K! M( ]$ ]/ I5 N" |要再秤, Round 3, 之後便知答案.
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2 d" H3 q- R/ \) |, be.g. #1 假設10為較輕的一粒, T! O# G, a( h1 [. m" w
Round 1; W8 j* l2 N, v
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
1 u" U9 y8 M2 z* C9,10 vs 11,12 = 9,10 < 11,12
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Round 3
' L, L4 h* ~6 w5 ^' l9 vs 10 = 9 > 10
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% O5 l# ^( ]  \. G- R, p5 gThe answer is 10.
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; E- F, |/ |& H' U, A' T8 p- He.g. #2 假設7為較輕的一粒) M1 d- a/ N8 U; c6 i. k4 R
Round 1
2 N% a7 r0 j- t. x0 x: \7 G' ^1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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' M7 |* O) V" U9 S5 f* m; vRound 2
& I, L8 e: s7 `3 _0 _: R5,6 vs 7,8 = 5,6 > 7,8' T  }, D5 a$ Z( P
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Round 3
; P# H+ q/ }! s0 m3 y7 vs 8 = 7 < 8% [8 G. G; n5 B. w3 x

) d* J- G8 {2 F8 N" y& H) G& ^The answer is 7.
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e.g. #3 假設13為較輕的一粒+ I- W4 X# W/ i" `6 P! ^% R
Round 1  P2 _. k; y5 z" \3 S6 g$ H
1,2,3,4 vs 5,6,7,8 = equal# C+ g: N/ S2 L- ]+ T

# D3 F+ v, i# {- \* E9 m* c7 S5 \Round 2* d$ ?8 z. j! {; g
9,10 vs 11,12 = equal
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No Round 3! V$ F0 c% W* P2 |! Q) p- |8 _
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The answer is 13.6 y6 L, }3 r9 V0 f& Q; p- k

4 o, i+ y7 P* k$ v( K' ]' }' d唔知我答得正唔正確呢?! # ]8 q9 L- L5 S: x# j, K) Q

; ^8 z: V7 x- I  B" A) K" T[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:0 |$ {  m& R0 `. I$ }3 c
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1-6 vs 7-12. O: o& J  m0 I
if 1-6 = 7-12     13 is fake, L0 ~) Z2 t2 y% b8 ^! U- f$ y& ^

5 P. ]% F0 s0 D3 [if not
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Weight the 2 time 6 T) S2 A1 ]" h) o

, Z: b8 \2 M0 E; j' I4 o+ gSuppose 1-6> 7-12! I- F& d0 D0 ~# R/ k
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1-3 vs 4-6 : X3 t% W0 y6 i- P: G5 B
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Then Weight the Third
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, L9 Z$ W" w9 P  H2 {$ ^! Z) XSuppose 4-6 > 1-3' H  N+ V/ t3 B5 D3 K

3 x7 B+ O7 P" s+ d, u4 MJust like the first Step
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2 i6 t" `1 `2 n0 c- W# u4 vs 5
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/ ?# M$ O' r' J6 [3 h% k+ Sif 4=5 6 is the fake one
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if 4>5  4 is the fake one ' x" M& o8 a, k+ T2 z$ u' R
and so on......................

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* ]* i' c5 M$ j) Y問題第二步
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Weight 1:  1-6> 7-12. v, N  V1 y. y# d2 U9 ]& T0 U
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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* D: G( i7 B- A你第三步点去搵 7-12 边一粒???
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問題第三步; q. H' c( r# Y
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Weight 1:  1-6> 7-12
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' M* x+ o" U' P' Y/ jWeight 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