[mea0]

المشاركة الأصلية كتبت بواسطة يالله ستـرك ممكن تكتب الاختيارات

If a player rolls one die and gets a number greater than 4, he wins $15. The cost to play the game is $5. What is the expected value of his gain?
A) $5 B) $2.5 C) $0 D) $-2.5