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> O dilema, Pentru matematicieni :)

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sorin1983
post 2 Apr 2009, 00:50
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Dupa o discutie mai aprinsa intre asa zisi absolventi de facultate radmasa.gif
am ajuns la concluzia ca nu stim sa calculam cate variante diferite se pot face cu numerele de inmatriculare ale tarii noastre.
Mai exact cate combinatii ies in total din cifre si litere. Ce formula se foloseste? Sau ce "chestie" matematica? Parca era ceva cu combinari...dar nu mai stiu exact! Vreau un raspuns corect nu caterinca! Mersi si astept provincia biggrin.gif


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Fratzica
post 2 Apr 2009, 01:24
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23 * 25 * 25 = 14375
astea se inmultesc cu 99 pt a afla totalul de numere dintr-un judet

calculat folosind formula: www.google.com x "numar total variante inmatriculare" = raspuns


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os
post 2 Apr 2009, 06:34
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E aproximativ asa, caci exista combinatii de litere care nu se folosesc (de exemplu F*T, C*R... inlocuiti steluta cu U).


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argon
post 2 Apr 2009, 06:37
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FLP
post 2 Apr 2009, 06:54
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sorin1983
post 2 Apr 2009, 07:47
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Gata stop joc:) Ce e aici?
@Fratzica sa inteleg ca doar 1.4 mil combinatii se pot face. Mersi, dar care e formula ai idee?
Restul vedeti-va de drum smile.gif


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Andy_ACS
post 2 Apr 2009, 08:16
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Pai treaba sta cam asa, ca sa intelegi:
la cifre avem de la 1 la 99.
La prima litera aveam lietrele din alfabet pai putin O si I parca.
La a doua litera si a treia avem toate combinatiile posibile.

Deci avem 99(numerele)*23(nr de litere pt prima litera)*25(nr litera 2)*25(nr litera 3)

Din acest numar total se exclud cateva numere vulgare.

Sper ca acum ai inteles.

Edit: Astea sunt calculele pentru un singur judet, sper ca s-a inteles.
Daca doresti numarul total din Romania, mai inmultesti cu numarul judetelor.

Bafta!

This post has been edited by Andy_ACS: 2 Apr 2009, 08:18


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brvictors
post 2 Apr 2009, 08:19
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argon
post 2 Apr 2009, 08:19
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si ce legatura are?


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Andy_ACS
post 2 Apr 2009, 08:21
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@brvictors:

QUOTE(Andy_ACS @ 2 Apr 2009, 09:16)
La prima litera aveam lietrele din alfabet pai putin O si I parca.
La a doua litera si a treia avem toate combinatiile posibile.
*



Se aplica numai la prima litera, nu si la celelalte. Expicatia ar fi ca nu vor sa se confunde cu 0(zero) sau 1(unu).

Stiu pe cineva care a vrut sa isi puna nr OVI si nu a putut.

Bafta!

This post has been edited by Andy_ACS: 2 Apr 2009, 08:22


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argon
post 2 Apr 2009, 08:26
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si io stiu care a vrut ION si nu a primit.


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sorin1983
post 2 Apr 2009, 08:27
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@Andy_ACS : daaaa am inteles! Asa ne chinuiam aseara:) dar uitasem sa excludem literele O si I... Eu eram nedumerit mai devreme ca nu stiam de unde 23 smile.gif) dar oboseala isi spune cuvantul smile.gif
In concluzie eram pe undeva pe aproape dar nu eram siguri biggrin.gif "Deci nu sunt mai destept ca un copil de clasa a 3-a!" radmasa.gif

This post has been edited by sorin1983: 2 Apr 2009, 08:29


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brvictors
post 2 Apr 2009, 08:36
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n-am stiut ca are importanta ordinea


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brigada_diverse
post 2 Apr 2009, 17:12
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eu zic ca altfel:
pt 1 judet: pt cifrele numarului ...nu cred ca se poate 00 pune...
deci avem (Arangamente de 10 luate cate 2 -1-adik(nr 00))*(Aranjamente de nr de litere luate cate 3 - nr de cuvinte vulgare)
Aranjamente de n luate cate k = n!/(n-k)! unde x!= 1*2*....*x; 0!=1 prin conventie
aranjamente: nr de submultimi... ex: {1;2;3} A de 3 luate cate doi pot fi {(1;2); (2;1);(1;3);(3;1);(2;3);(3;2)}

This post has been edited by cristitranca: 2 Apr 2009, 20:18


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koldun
post 2 Apr 2009, 17:30
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cifrele numerice?


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OAP
post 2 Apr 2009, 19:16
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QUOTE(sorin1983 @ 2 Apr 2009, 01:50)
Mai exact cate combinatii ies in total din cifre si litere. Ce formula se foloseste?

numere normale sau de-alea labartate? nedumerire.gif


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Shush
post 2 Apr 2009, 20:11
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Da de ce fara Q ? Nu stiu politistii sa scrie aceasta litera ? happy.gif


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Marty
post 2 Apr 2009, 20:18
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De scris o scriu, mai greu s-o citeasca. N-ai vazut ca daca te cheama Popa, agentu' citeste "pe zero pe a" ?


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and_rei
post 2 Apr 2009, 22:17
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adica agentu o sa-mi citeasca numele pe zero pe a andrei??? blink.gif .pai daca o sa mi-l citeasca asa o sa-i zic si eu p m**a pe nevasta*a pe...etc radmasa.gif

This post has been edited by ianys_andrey: 2 Apr 2009, 22:18


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