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A lottery game has balls numbered 1 through 21. What is the probability of selecting an even numbered ball or a 5?

User Mdonati
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4 votes

Answer:

11/21

Explanation:

There are 10 even numbers that lie between 1 and 21 (2,4,6,8,10,12,14,16,18, and 20). These 10 balls, plus the 5-ball equals a total of 11 balls that could get picked. Therefore, the probability of picking one of these balls is 11/21.

User Tonny
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