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Source: wikipedia.org
مسألة يوم الميلاد (Info)
تطرح مسألة يوم الميلاد السؤال حيث، في مجموعة عشوائية من n أشخاص، ما هو الاحتمال أن زوجا ما منهم يملك نفس عيد الميلاد. إذا كان هنالك 367 أشخاص، نعرف أنه يوجد على الأقل زوج واحد يشتركون بنفس يوم الميلاد، لأنه يوجد 366 إمكانية لاختيار يوم الميلاد.
