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Monday, 26 december 2011

2011 strikes again :)

Proposed by catanedelcuOffline
(one comment)4.162 times displayed

Ca sa fiu in trend, propun si eu o problema cu 2011 :

Se dau 2011 puncte pe un cerc. Alegem arbitrar doua puncte distincte  care formeaza o dreapta. Mai alegem alte doua puncte distincte si diferite de primele care formeaza o a doua dreapta.

Care este probabilitatea ca aceste doua drepete sa se intersecteze in interiorul cercului ?


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