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, J" W) V3 J; l3 ]2 T2 {
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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)。
+ N: _+ [! T& f; }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？』' |  K$ i/ V4 ]! \# i
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注意: 8 r  g6 u& w. q: `0 T& j* L: K) S

( S/ y* C3 c) X1. 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:
$ R# \" d5 H* a$ c- c& h$ l% X/ `相信e條題目都有吾少人玩...

4 B; }9 t4 S! {8 T2 L我以前畫左個chart去答,# L! X) [8 F9 i% Z( A: m6 N- U' D1 O
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。0 e" A3 w; }( f3 a
13.........' U5 n: a! Z( M

) Q+ T  g/ G4 }0 d' p, _[ 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," }5 s7 A8 _& `& L& Y. E+ w3 E
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:/ J7 v3 y6 I7 k" q  s. o7 Z$ [3 d
唔識隱藏...已經諗到..

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sor !!!....e加改左
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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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* E' N5 m  Q  S) u$ M* n[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
6 t) @4 k3 |9 e: D相信e條題目都有吾少人玩...

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. c3 ?4 C+ q6 _1 _; W  lPlayPlay, Let me know later who has the right answer and I will add points accordingly./ h  Y7 A; b4 Y2 Q3 @! ]" G
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:' E1 \- N  X9 q; A- i" R
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.
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2 i) M/ Y3 B) c4 F. U8 Q, oThanks

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( ?% g/ A4 ^$ I) ^0 n不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.
2 {% Q" t8 b$ h1 q, q7 e5 H* b1-6 vs 7-12! S. d) v2 |6 M! X, ^5 ?; e
if 1-6 = 7-12     13 is fake( q/ v6 d* j6 u
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if not
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' z0 X; N7 U7 ?3 DWeight the 2 time : \' c; k: {/ e5 A# r( V
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Suppose 1-6> 7-12
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1-3 vs 4-6 2 ]& P& h& ^: N  B0 @) E' e

) o9 I. @( C4 l' MThen Weight the Third/ ^$ r# @5 a' s6 e
3.
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4 D3 B) K+ U; F" O6 k8 ?. NSuppose 4-6 > 1-3! x' O: A1 C$ L8 ?) z: S/ n" q

7 M' n$ ?. b' \5 D  f8 }Just like the first Step
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4 vs 5
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  F( f) q% d0 z% c& oif 4=5 6 is the fake one
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if 4>5  4 is the fake one ) P- u/ R2 l$ V7 G% m' x8 ]: I# P
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and so on......................

hello1997

分3組4隻波子秤2 b# V7 _" F1 z: H

2 U- E2 S' @/ UGroup A: 1,2,3,4
4 h# U6 s: |7 ]* T4 WGroup B: 5,6,7,8; _! {! s6 X3 a6 k; ]$ A
Group C: 9,10,11,12  h: |1 F* V9 V3 f1 C( p
Group D: 13) n) y) o: v8 H2 v( w# O, r3 a

8 u$ O2 F# V, m+ a  T3 q$ MRound 1
& R& [& ^# Y8 q$ Y' PGroup A vs Group B
0 b1 E1 R0 H" w1 B6 M# ]如A and B一樣, 即較輕一粒在Group C or D
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5 c$ O6 Y5 v! n6 j; NRound 2
$ z& I! b( O) A% a4 X再在Group C拆成:9 J4 ?- N& `5 |" D
Group Ca: 9,10: v2 _- m9 E# V8 G$ Y, f6 l
Group Cb: 11,12
8 o3 M, d$ o! q然後再秤, 如一樣, 即13為較輕一粒.
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6 T, p1 N6 F: v3 B- ?' \# e如不同, 即較輕一組有一粒較輕波子在其中,
4 c1 V9 S+ t/ s% T要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒4 s5 X4 y2 T3 s* K% L
Round 1
+ p5 `) t9 Z5 v8 W9 L5 l1,2,3,4 vs 5,6,7,8 = equal
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Round 2
( a; g$ c. @4 T9 n( j) t! T9,10 vs 11,12 = 9,10 < 11,128 v6 c7 C) v/ w8 o8 G8 b" x
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Round 3' M! b  W! Y  [1 |2 ^7 ?) h4 ]& e5 n
9 vs 10 = 9 > 102 u6 H/ Y% _  P7 t) v; n8 t

% v  f' B0 `# t" \6 c3 PThe answer is 10.
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e.g. #2 假設7為較輕的一粒5 c6 q; G% D  J! ]+ g" h
Round 1
) s( V' f, V% z1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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- Z, ^; |% I; d5 Q- pRound 2
& L- w& E1 x- k( J5,6 vs 7,8 = 5,6 > 7,8
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$ a4 c1 k# c3 x. B& HRound 35 y+ B+ F! j, A8 E' h) J$ _. V+ }
7 vs 8 = 7 < 8( a+ ^6 p( g- n* t5 j

: G5 V) a0 N' L! R( cThe answer is 7.
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% S( j; A$ Z& u8 z# ?2 h4 ^e.g. #3 假設13為較輕的一粒
1 a! }0 Z: q3 r3 U' @3 |' P' oRound 1/ @' f$ z; S# ^2 J# o  I2 Q% i5 w
1,2,3,4 vs 5,6,7,8 = equal$ }% l1 _9 S2 w* V! B5 d. R9 ~+ q1 L

' F. I& t/ k1 s; h; n8 ]0 x8 M3 U! HRound 2% O2 t) |$ O! T$ I- Y) f3 S
9,10 vs 11,12 = equal* d) e6 G8 R& d* B: h% B; c
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No Round 3
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% M* B5 I! B& @6 z1 g- oThe answer is 13.+ V  K* y. F  j+ _9 ~

" g( V, Q  F! F2 O, m) @  f唔知我答得正唔正確呢?!
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! ]. |9 |, d5 l/ F+ V/ J9 m" \- [[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:- {9 K' y! E- [7 Y* s# ~5 w
1.
. v3 Z# x5 A1 w9 Q8 y5 S- @( A1-6 vs 7-12
3 x1 Z# c; D0 X5 Y( _; mif 1-6 = 7-12     13 is fake
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  k5 Y! b7 u: S7 L, s% kif not 8 T! X. f6 W: J0 q' V' f) H  l
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Weight the 2 time 6 X5 M. S# j% j) ^# |

0 q0 |) r1 _" {6 x; G0 R( y2 D, a, v7 h" TSuppose 1-6> 7-12" f9 W6 I. v( E2 D, U

# C3 `& b0 X/ @) P+ e9 O1-3 vs 4-6 , ]; W0 K& q! Y
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Then Weight the Third4 p/ F$ H4 r2 j+ N& s
3.
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4 p# o, Y; q; x+ L* L* iSuppose 4-6 > 1-3
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Just like the first Step  m" M: q0 ^4 N) o5 u9 S" m

! F5 T- H, p5 q: R' D" b4 vs 5
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9 A5 |% R/ V" l" V4 H2 |5 Yif 4=5 6 is the fake one
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9 k* ^$ |( @, e4 Q7 K1 w. _if 4>5  4 is the fake one 1 X/ d, Q8 |) \; y9 @9 Q& y
and so on......................

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問題第二步7 q% B! @- W, J+ F

1 t- o3 V' M' e! H6 G% oWeight 1:  1-6> 7-12
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! y( q/ {/ Y' G4 L, S9 H- ?" ~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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問題第三步) A; x' Q4 s% i7 L% w# x
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Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 ( J! d5 N3 z) {* U! r0 F

9 R8 V+ \* k, ~: Y; A2 K7 j0 N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