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: I& \* H+ K# j, T9 [+ s

, C( u& J! b- ~& b. r『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)。
) r; H) n! i# H; ^2 s: L9 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？』/ x! o' H& f/ {6 y

8 u8 A8 g6 v2 S注意: 6 v; t/ x7 Z5 }

4 `  {; f( O) s1. 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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: \4 X6 o  `0 y* K, o# }  K[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
0 z( B# K; A5 L% G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,
% ^, [1 h6 q! K) Z等我搵下仲在吾在
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: ~4 D7 X/ I5 z* z7 q3 @/ h; t* _, c當日用左37分鐘答１２粒波子，差７分鐘才合格。8 j6 E7 i. Q9 ^) f& I
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,5 ?0 S+ r, C0 s8 \9 W( I  @6 t
等我搵下...

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9 z: q: g$ M- N, V# N; v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:+ U7 |* F9 p* d  e
唔識隱藏...已經諗到..

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$ D5 s, I. B2 g- H. w! y4 xsor !!!....e加改左: X* M9 T& x6 ?/ p+ Z

* p2 k) B3 v. z" e. d2. 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# C/ ~) V2 _4 t. c) U: _+ j; 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:
. \2 R! l) O: n0 D4 s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:2 D# c; x4 c8 U, K5 Y" f+ H
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) v3 x0 |4 x7 _5 U( l$ `PlayPlay, Let me know later who has the right answer and I will add points accordingly.- g( K; F0 L; |* N

0 Q9 y7 p6 t! m! ~4 ]( V) KThanks

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+ Z, u3 n# w* r+ O8 D3 Q不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1.! {) L* G/ O7 o# O: r
1-6 vs 7-12& t% A+ P' k1 L! O/ J
if 1-6 = 7-12     13 is fake+ }( ^4 `# J2 j; c7 j

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Weight the 2 time 6 N/ o; ]% ?4 c: Z' C

6 u& \) ]5 r) D5 n) U  NSuppose 1-6> 7-121 H  c7 g3 ?7 Z; _/ [0 G8 }4 Y; x3 N

. r2 B0 y, [* t1-3 vs 4-6 . O/ _& s4 [" Q& U* D5 d7 O. ]
9 z6 ^7 `7 g/ d7 z
Then Weight the Third; U8 E( f4 K( W$ s
3.3 r- p& D( d, j- @( d9 k1 o: S

% V  o# ~. Y0 B6 y. \1 ^3 x3 eSuppose 4-6 > 1-36 c, K. ]) U' u* W
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Just like the first Step( @& [. g9 t# k8 e

0 K& w2 U2 ~' w7 Z- Y4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one 6 D5 H8 `9 f  I+ `
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and so on......................

hello1997

分3組4隻波子秤
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2 B4 D' m8 b& HGroup A: 1,2,3,4
6 n+ L7 q* j0 u9 hGroup B: 5,6,7,8! U/ s0 e& [7 s1 A- ]
Group C: 9,10,11,12- R, _/ C3 i) E' V; \' E' j* N
Group D: 13
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Round 14 U) K+ g5 f. L- i; H0 ]
Group A vs Group B
0 g5 e+ A, I" }3 Q  O6 M. A: p" u* A! ~如A and B一樣, 即較輕一粒在Group C or D9 ?, q1 A- ?( E

6 r9 a8 N+ U  P: i: u- {Round 2
6 S2 W/ k5 M  ^$ s. n再在Group C拆成:
, y' }, A; M5 P9 Z" W, u* JGroup Ca: 9,104 w% B% e( T9 H, j
Group Cb: 11,12- T6 r4 y* q5 r  Y3 j
然後再秤, 如一樣, 即13為較輕一粒.6 j3 C8 a# Y( k4 T- j; M
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如不同, 即較輕一組有一粒較輕波子在其中,
, R* V2 u9 q8 j. `1 N0 i! @5 v3 j& q- u要再秤, Round 3, 之後便知答案.2 x' t0 y" |/ e0 D: z
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e.g. #1 假設10為較輕的一粒
$ r' Z" f+ Z/ g. S$ Z& JRound 1
, o( Z" ~" l- K/ r1,2,3,4 vs 5,6,7,8 = equal4 ?' q6 C8 S$ V& w* t5 s

1 h: l" e5 j6 D9 K1 a) PRound 2  x1 q1 l$ Y1 a! R8 r
9,10 vs 11,12 = 9,10 < 11,12
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Round 3
2 W- s: e; ?2 Q9 vs 10 = 9 > 104 v8 `  j8 r1 G5 x  p+ F, R
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The answer is 10.
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e.g. #2 假設7為較輕的一粒! S" h4 @9 M$ B7 p
Round 11 h1 F# @3 b8 T. h6 m
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2
0 C, e# v# S: o5,6 vs 7,8 = 5,6 > 7,8
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- `4 R' P; k( i* t4 A! C/ YRound 3( v7 }- y8 k0 x5 X# H# w" [
7 vs 8 = 7 < 8
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The answer is 7.; `9 r8 Y+ T0 a0 m" z' E
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e.g. #3 假設13為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal
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: {8 }5 P# c7 J' Y9 g- GRound 2
( D" c9 s* T  k) O, Q1 D9,10 vs 11,12 = equal, p% F6 ?. d; U

) Y& i6 V/ n, a6 r7 e% n9 O! ^  QNo Round 3; g$ N! z( D1 G( B
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The answer is 13.
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唔知我答得正唔正確呢?!
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7 ~& B! g9 ]6 R' b; ~[ 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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# [* j; t% r. j/ k) L1-6 vs 7-12$ |  |: }& y4 r. \
if 1-6 = 7-12     13 is fake
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if not
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2 M" i' N5 r. P0 d3 {Weight the 2 time ( s9 u: \  X' Y3 z9 Y0 r9 U

: x2 u9 P* c  A7 C+ e8 B: ]- ]Suppose 1-6> 7-120 Z; L/ i) ]2 D1 n. }6 x

, E! z7 b  _; E, R+ [, B2 \1-3 vs 4-6 9 ~. v. m; I, \9 q

% |. W) U9 j: Z( s3 f$ c5 m# F  gThen Weight the Third0 M  A& _! o2 a7 U
3.
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6 U5 G" ~' _3 k* S5 O4 S/ Z& mSuppose 4-6 > 1-3# z6 k1 o7 z7 l5 m9 t" I

1 m6 s' a& l2 e# o4 {* h8 ^Just like the first Step
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, I' p* m5 p2 b" B- M2 c4 vs 5
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* l; `3 }: }3 C0 R+ d2 g+ S0 z$ K; mif 4=5 6 is the fake one
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if 4>5  4 is the fake one ( ?# z, m. w" g9 I* S# h) B6 u
and so on......................

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問題第二步4 e3 D6 L- @  H$ v) V4 k
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Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-68 y5 a! c) `" G4 I4 n
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你第三步点去搵 7-12 边一粒???
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- H; D+ k$ e6 u7 q, K========================================8 {; [) q: B3 g8 G5 Q  T( t" i" X

3 g( P* U( h6 w問題第三步
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Weight 1:  1-6> 7-12; R8 N0 I  z$ U& H

1 p) R, l+ |6 M. l4 O8 lWeight 2:  4-6 > 1-3 ) e* {& i6 t7 z7 ]  N) x

: ~# |6 m+ V. ~) U1 v7 M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