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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. V3 R/ x' i8 y3 ?) ]% l; U『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)。
" _8 ^0 u" P% L: L& e; Z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？』4 @  \1 z. s- h7 q/ P; N7 E  x
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注意: 7 p3 Q# _4 ]" p/ w9 g, K( ^

' n) }% W6 M( i1. 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& Z& l. G2 Q& ^5 D" }9 |

9 Z- \6 E8 d5 Y& N$ p) V7 A: z4 p2. 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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4 B! s0 X, \" k& C6 `[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
' V. c7 s4 C  C) ?. b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,
) t! L# a! V9 _3 F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。" Q0 [  L- r5 n5 w5 x1 V  `& U& K
13.........
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[ 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,* x  R( \) b  [" c: q
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:
& o' k0 i: p; _* t# ~8 J. _唔識隱藏...已經諗到..

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( G6 `" ~; J* V' o) }5 Qsor !!!....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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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:' q* Y  ^; m' b; o6 w) Q
相信e條題目都有吾少人玩...

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( E/ I( o1 D2 {$ X  cPlayPlay, Let me know later who has the right answer and I will add points accordingly.( T$ r& q7 c' B( G/ B
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:0 k) Y& i, t! U3 m0 B
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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

1./ d; g+ s. a4 L; q; }
1-6 vs 7-124 t0 Q. [: q8 B
if 1-6 = 7-12     13 is fake+ m8 L) }6 t" Q' U) y5 ^

0 q% k, P7 k, u) i4 S2 z0 ]/ zif not
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Weight the 2 time
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third# c4 q6 e: k: t" p4 W9 q# A, g% E
3.
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Suppose 4-6 > 1-3
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8 u2 g  V/ M: ?; _2 }# XJust like the first Step7 q: u0 q7 }/ W, X* v8 c7 P3 U

7 p! q% x) U3 T7 `4 vs 5
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$ a/ A  _0 J& Rif 4=5 6 is the fake one
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if 4>5  4 is the fake one 5 y# J4 B4 P3 f1 F

# Q7 A: j& J% Fand so on......................

hello1997

分3組4隻波子秤
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% x8 N" f# }, {/ E6 @- EGroup A: 1,2,3,4, u% G5 ^0 Q1 b/ S, R
Group B: 5,6,7,8( W! _6 c, u; H. K# g
Group C: 9,10,11,12
% V  G2 V% N) I4 Y8 `  pGroup D: 13
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$ a/ R8 W7 j, H+ M9 MRound 1
. m" c' X, W. x. h6 F: RGroup A vs Group B& K) O7 ]6 l1 I1 C* X5 b2 ]
如A and B一樣, 即較輕一粒在Group C or D; u) E; B& G& a+ I( u" X9 {

$ H% i6 r& j# F% k! t2 `" |  ~Round 2+ Y9 C; l) |8 s5 d2 w
再在Group C拆成:
( J2 t" A# ?" i/ xGroup Ca: 9,10- |7 E% s$ L7 ?" I, ^: o! G* d
Group Cb: 11,12" k! O1 F0 L/ a
然後再秤, 如一樣, 即13為較輕一粒.2 b2 V- N4 V8 m/ t

$ \+ O+ @7 V9 n/ \; N- z1 W如不同, 即較輕一組有一粒較輕波子在其中, , D4 ]; `8 Q; r. o6 w& W: s
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9 ~) Y* o  X4 g& A5 f) N
Round 1; y" O3 K( [; H! F5 B' F# u) }
1,2,3,4 vs 5,6,7,8 = equal; u* U6 h4 ]" S2 s0 q
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Round 2# t: t1 Z6 l7 L8 `  _" s
9,10 vs 11,12 = 9,10 < 11,12
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Round 3
( E7 Z# h2 ~8 P, I: u9 vs 10 = 9 > 10' i, O2 T6 |& F2 d4 I6 X9 M

8 P. I2 g% ?+ X& b% u* dThe answer is 10.' t  m2 o# `/ S8 Q% S& T0 @* l

# X: B' J0 J( Y" Ve.g. #2 假設7為較輕的一粒* q5 L# ~: ~! K$ f' ?
Round 1
1 o0 Q- p  e  u1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
  @3 `! M8 {1 M& S% m. u8 g5,6 vs 7,8 = 5,6 > 7,8
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Round 35 {- E* a  |) c$ C( O2 S3 ]
7 vs 8 = 7 < 8, f. o* K+ S- [! H& G* S2 O8 I
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The answer is 7.! N9 |, E; X# O$ _- k5 L0 F( c

$ Z$ g! ~- @; n$ o" g* g/ K7 w3 Qe.g. #3 假設13為較輕的一粒" ~$ p2 v2 V3 }# a
Round 1
5 d; e8 i1 [+ Q6 m0 I& p1,2,3,4 vs 5,6,7,8 = equal
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Round 2
" {* d) Q) Q6 f3 k, u9,10 vs 11,12 = equal
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  c/ g' s3 D# fNo Round 3
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6 _: V& ^  v( H* y. w; JThe answer is 13.# {+ N: z& t$ N5 w) X& N

6 V0 t; |* ?2 E& f" S唔知我答得正唔正確呢?! / ^2 q" i7 n' u6 J* o( S5 M

; i* e8 j% O! I  `; t, z! N: j1 C[ 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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+ i, k' G! M3 c& a' d1-6 vs 7-12' V; q/ G$ s% F3 @
if 1-6 = 7-12     13 is fake
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3 T6 }3 [0 R9 L1 _6 e$ Uif not
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Weight the 2 time # H$ V) @. y, n

8 V& _! i, f! h+ y6 J3 |Suppose 1-6> 7-12' S( e4 m4 p6 L. f5 S! R  _: ^
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1-3 vs 4-6
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Then Weight the Third- d6 W# Q6 d6 u7 b+ c
3.  W, X7 Z7 N7 s  Z& `' q

2 p" P% v, g" J" T: PSuppose 4-6 > 1-3
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Just like the first Step
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  @5 u$ C1 d/ C9 `! @4 vs 5 $ h( N( _( L( S+ Q7 y
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if 4=5 6 is the fake one 4 O8 t( ]+ \' U0 R" a
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if 4>5  4 is the fake one   R: L) w* V/ N) B  X8 H( R  `
and so on......................

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問題第二步5 [$ S- ~! a4 C4 p4 N

2 h0 p# v6 |( C/ l8 ~" W% o' t. H: W9 qWeight 1:  1-6> 7-12) d8 t3 @8 D4 s" e
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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: \" J5 n6 e* L; f. Z- z你第三步点去搵 7-12 边一粒???
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========================================
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+ {* D6 w- v% b問題第三步, A4 r* Q1 `* w$ J  Y( r2 \& k5 K

8 k6 M# U% z  }  p2 `7 ?Weight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3 ) v6 k8 D/ `- r  y' u5 A

8 `: Q8 L! d/ G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