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* z% ^# E4 }9 i4 ?1 }

/ W" B" Y9 n+ b5 }2 I% ~『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)。
  Q* _" ~3 C7 q* {- K9 \  @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: & n% U2 ~0 k/ J

& ]. T2 e9 n  V8 y0 L$ l3 w1. 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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' T1 k7 Y" V$ x% J[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:% V& ~" \, K: u$ W. ~
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 z+ U2 G; m! U: P  a7 l- h$ b' u
等我搵下仲在吾在1 a' P# H( r$ w3 M; E0 K) ]

* c% L) B$ [) L! t: e1 b當日用左37分鐘答１２粒波子，差７分鐘才合格。8 }& a9 L( b& [) G8 p
13.........# ?0 t6 @& H9 c0 M5 C

  z0 A5 C& V, T1 z" X* U* c% m) u4 x[ 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,( [$ n. x. J7 H# Y
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:% Q4 R' j* |" S: A* ?
唔識隱藏...已經諗到..

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sor !!!....e加改左, _, w. y0 n, _, x  m7 D
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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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( Q8 Q3 z9 I0 j7 k[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
: J, l+ e* |! _2 z3 _3 Z相信e條題目都有吾少人玩...

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9 k* u' J+ j0 E4 j- W; |/ ^9 A6 ~* k( RPlayPlay, Let me know later who has the right answer and I will add points accordingly.
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# i7 t4 w  R- H/ ~4 A2 AThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:3 P7 P* A$ P7 }5 A$ q# T3 l
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7 r# z' s1 S, Q/ t* g! |7 h6 ~9 L0 w; yPlayPlay, Let me know later who has the right answer and I will add points accordingly.7 p0 \6 t* c7 U* `" y
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Thanks

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: K% r2 `% f+ c不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.& e0 L5 w0 B8 A* W) i- z( A- _
1-6 vs 7-12, w/ s; X1 e' a# T1 ~8 g
if 1-6 = 7-12     13 is fake
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Weight the 2 time 5 O' s+ D6 j' U1 _' ]4 X
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Suppose 1-6> 7-12
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1-3 vs 4-6
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9 @7 m. o$ s7 s1 R3 pThen Weight the Third
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5 g6 ]5 l2 V9 g, x4 W5 ~: T7 y  g
Suppose 4-6 > 1-3+ Z, X& Q" Q  I" w. k# b

9 v* F0 N: U, i$ V0 O9 aJust like the first Step# W4 _2 i/ J1 y1 o

" w" C" B) P! M3 a: k4 vs 5 1 Z3 M. V7 T1 Y  p3 i; s( ]" g

3 P* R' o7 ^. @3 H- A* l) k' ^3 cif 4=5 6 is the fake one 1 H  s9 d1 q0 E: T7 t
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if 4>5  4 is the fake one ( X6 Q8 y* h% ]  `! n
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and so on......................

hello1997

分3組4隻波子秤8 c! b8 S5 E1 V
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Group A: 1,2,3,4
2 Q) f8 ?3 F8 L6 iGroup B: 5,6,7,8
3 g/ `7 H1 e1 D' `1 u8 `Group C: 9,10,11,123 [8 o7 X1 N9 I- U& q- M
Group D: 13
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Round 1/ C  E$ `2 [( z4 |
Group A vs Group B/ j9 m# Y( L1 C+ _
如A and B一樣, 即較輕一粒在Group C or D
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Round 24 s* k+ M6 O7 p8 X$ R+ ~
再在Group C拆成:& \6 V# d+ M" R5 e$ q8 W
Group Ca: 9,107 F5 z% i" v0 p2 y) P( E6 P
Group Cb: 11,128 S% E) d& Y2 n0 N
然後再秤, 如一樣, 即13為較輕一粒.- p7 h, c* p( N9 E# w0 q; _8 \1 ^* R

) [& w* |# r- A: j: P+ `1 V如不同, 即較輕一組有一粒較輕波子在其中, 1 c( b9 s0 K- S* _  |2 x' ]
要再秤, Round 3, 之後便知答案.! Q2 Y+ f$ W2 o

% O+ W) r, B6 m. N8 W' g" m5 `e.g. #1 假設10為較輕的一粒# M" L7 m- i2 Q: ]2 K. `
Round 1
* h9 l3 y( a! }9 e1,2,3,4 vs 5,6,7,8 = equal
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/ X+ W( F# `. _& j$ G& y1 k$ |, a1 \6 ERound 2
7 S6 q- M/ q! A+ r. I9 V/ @9,10 vs 11,12 = 9,10 < 11,12
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4 w% x; T5 Y- Y, w2 {Round 3
# t0 j# B2 D# J- \: a5 t9 vs 10 = 9 > 10
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The answer is 10.+ d, S. Y7 B. Y& s
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e.g. #2 假設7為較輕的一粒, C3 Y$ t' f$ O8 C+ j9 f: R
Round 1& r; C( B! J+ V5 n1 s
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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7 _- {& Z! {  @; n$ c. k9 k6 W4 fRound 2
+ _8 r: X, L+ }$ `  U5,6 vs 7,8 = 5,6 > 7,8
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* Z7 K( u8 z1 c5 F5 PRound 3  ?6 P6 C% k4 h) b# o
7 vs 8 = 7 < 89 d) S1 D; N* E$ I

' ^/ v( _, H0 d' u. [8 ^  qThe answer is 7.$ l! S/ k& E( \
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e.g. #3 假設13為較輕的一粒( t, C" m" _$ }- f
Round 1+ \) x% L, E8 S4 Z8 B
1,2,3,4 vs 5,6,7,8 = equal
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Round 2. U3 M& l; P# x8 O
9,10 vs 11,12 = equal: W  f* a3 c6 E  F- f
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No Round 3
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' V. W3 }8 [( _5 M' ?8 BThe answer is 13.- T7 ~0 p4 Z8 q$ r- }
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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:% H: u8 {$ @) N7 I% e& Q3 r1 b
1.
' a, V; b( H+ V0 U3 {1-6 vs 7-12
5 w# b! V/ F% v7 z/ C. |if 1-6 = 7-12     13 is fake, R* |8 J. `" o9 l( K( X: X
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if not 3 p( q- t0 U/ z3 |4 A; c/ Z" H& h
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Weight the 2 time
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Suppose 1-6> 7-12
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; k, z% Q. I# O9 Q1-3 vs 4-6
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Then Weight the Third( Z4 T& M& ?/ N9 `5 u" [9 {8 Z
3.
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Suppose 4-6 > 1-3
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0 {2 @1 n' ^0 E- j6 wJust like the first Step
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7 M- ^3 @# p( F' ^. A# d4 vs 5 3 m* x# @3 [7 c

1 ?6 X+ s% Z3 X6 |if 4=5 6 is the fake one
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if 4>5  4 is the fake one
8 T% {/ s7 ?5 R7 O; l7 d' \1 G. Hand so on......................

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+ P, F) {( V% t6 {% i1 p$ q: o問題第二步' f2 Z- T- f4 j3 g& j3 j- h
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Weight 1:  1-6> 7-12# x$ g+ q. w' r& z0 @5 ^! v' q6 N

/ i/ f- S0 I+ x$ WWeight 2:  1-3 vs 4-6 , if 1-3 = 4-69 j6 v& @4 n0 i0 ^0 ^$ V2 C. r
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你第三步点去搵 7-12 边一粒???& j  Z2 s- \: t1 }+ q  {2 I, t
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! V6 q  n+ Q) w問題第三步
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6 {/ r! c0 [" Z8 ~Weight 1:  1-6> 7-129 U$ d+ T- F0 t& [( l2 Z( R+ q

0 Z) `8 B3 p- r; e  T* dWeight 2:  4-6 > 1-3 1 F$ j8 o# H  \' W$ W
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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