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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/ K: z' p* D5 C3 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)。
# G: t# J( {" u" \; S( _( 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？』. Q/ |) b) p9 ?0 o; A! o
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注意:
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1. 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7 I* ?+ s: L5 W$ F) f; n

. p& Q- Q1 f% S0 f6 r[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
2 D! ~8 A1 s: N相信e條題目都有吾少人玩...

- c. a0 e( a$ P我以前畫左個chart去答,
- X- S) M& d+ j" g等我搵下仲在吾在
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9 p* s; G" O! C$ z: z8 h當日用左37分鐘答１２粒波子，差７分鐘才合格。
  @% y4 U3 x& |4 ?4 J. J# h13.........( O& {4 ]0 S3 y7 n# V! e7 W

8 Q) G' ^' p8 E4 H  R) h3 o" b8 G[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:& r# g) }9 C: z4 X; ?
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我以前畫左個chart去答,: v0 E, n, g4 ^' I9 ~
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:
2 r* c  Y% S5 M+ D# p' b' {/ W唔識隱藏...已經諗到..

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sor !!!....e加改左* _+ S: W1 L# I+ l4 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  F. r) S( o4 `" r( R- x9 Q( N
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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:
( A5 i* R& u9 H# j2 n  O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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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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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! r6 {) @* ]6 i8 P* u
if 1-6 = 7-12     13 is fake' o. o: }6 ]& w5 y! o; Q
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if not ( }2 c" m5 r" _) E

/ w* c; k0 C1 K! l/ ^8 nWeight 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
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Suppose 4-6 > 1-3+ N; B! K7 V+ x% H# p

6 y, X5 l1 U0 P, d: O% Z, HJust like the first Step
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4 vs 5 0 a$ O+ a/ V  P

" S- }' r% I* {+ `if 4=5 6 is the fake one
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if 4>5  4 is the fake one
% `6 x3 I1 p4 X1 k3 J2 m' I9 s) {2 y. o- ~/ f
and so on......................

hello1997

分3組4隻波子秤
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1 w5 J! w5 F0 E; D1 S  g& W2 qGroup A: 1,2,3,44 z) K, [( X* x$ R' h
Group B: 5,6,7,8
( C, T6 Q6 |) J7 z6 P3 g  ]Group C: 9,10,11,12
, k. \. E$ C& ?  X7 @  s+ EGroup D: 132 l/ A1 E/ ~- [9 W% H. U! @
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Round 12 v% J2 x% P0 m$ ]7 P" o
Group A vs Group B, t& a  l, k: u% T" [9 D6 x
如A and B一樣, 即較輕一粒在Group C or D6 l" U* j4 G. P3 q1 r! H! [
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Round 2
0 S4 E8 P, }7 B; R2 j- {7 {% V再在Group C拆成:
2 Q* w% I# h. L' C7 o4 qGroup Ca: 9,106 y4 O9 J( @+ h& Q
Group Cb: 11,12% T' x& _& {9 O  v8 ^
然後再秤, 如一樣, 即13為較輕一粒., M+ ~2 o, e- K) R
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如不同, 即較輕一組有一粒較輕波子在其中, 8 J6 R. D7 N9 n3 |7 h0 F
要再秤, Round 3, 之後便知答案.
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! c5 w/ I  \( c( \$ _+ ~e.g. #1 假設10為較輕的一粒
5 j, {' O' {- d; ZRound 1
+ }  {9 x3 ^1 T) s/ m# k1,2,3,4 vs 5,6,7,8 = equal
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Round 2
* l2 B! k$ E% q) N9,10 vs 11,12 = 9,10 < 11,12
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. ^  T/ s* N, T/ nRound 3
8 v, }6 J  F; e" m# f) Q9 vs 10 = 9 > 10* O; }: h$ h0 l) j! a# m

. u- F$ i6 V! ?- WThe answer is 10.( m1 m) F: D) q4 l7 m; y

0 |" U. l( h. v5 U' Fe.g. #2 假設7為較輕的一粒
9 `; }0 [8 Q5 Z1 u7 j4 zRound 1) ]' G; U: |# V+ L- ?
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
1 e( V! S* _' X5 c2 I; d/ W5,6 vs 7,8 = 5,6 > 7,85 o# V) u7 [# C' o7 X3 c3 |

0 [4 y! s3 f8 g2 l: Y" M) KRound 38 {; e/ `3 ]) y0 V7 ^# v8 N5 d) z
7 vs 8 = 7 < 8
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The answer is 7.; x( {; U8 P- }- Z/ M( \1 G- d

/ R0 S1 M) w& @/ M4 he.g. #3 假設13為較輕的一粒
4 z* g0 ?( s9 a7 WRound 1
9 U$ M- j6 W, Z* T; L( |! C1,2,3,4 vs 5,6,7,8 = equal5 ~2 ~2 _# S( F# A
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Round 2! Q* R' k$ _  n3 O& ]# e
9,10 vs 11,12 = equal
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No Round 3
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The answer is 13.
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唔知我答得正唔正確呢?! , d5 n# H% `& Q4 Y, i. z/ H/ t8 w

2 J! j! M! C" i* o) X; G: y2 g[ 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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1-6 vs 7-12
+ W7 F1 E# q" Y& o; pif 1-6 = 7-12     13 is fake
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Weight the 2 time
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Suppose 1-6> 7-12
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" R: v7 r) c! L! z  W% q$ v- b1-3 vs 4-6 % ^  w% U  g! [8 Q9 b5 L: M# R
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Then Weight the Third
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( L; w+ @) K8 J1 x2 V! wSuppose 4-6 > 1-3
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Just like the first Step
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4 vs 5 ( [9 o& [, E5 O- p

6 j( C8 f' B: Jif 4=5 6 is the fake one
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if 4>5  4 is the fake one
" C# \6 h7 n1 z; W0 L1 |and so on......................

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. w, e) H( A& n  ^7 A  W: K問題第二步
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8 a/ ?5 H" S) \$ B8 aWeight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6; ~% _& s# {0 X5 G2 a2 C+ \
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你第三步点去搵 7-12 边一粒???3 K! q) o. p5 a( R" O9 t
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========================================
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9 V) O3 J5 C0 W& }9 L8 ~! S& n# x問題第三步
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Weight 1:  1-6> 7-12
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/ O# t# {: S. d: nWeight 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