Quiz: Probability of Simple Events

A machine used for a lottery has 10 balls. Each ball is marked with a different single digit from 0 to 9. One ball is randomly selected and the digit is the winning number. Use this data for questions 1 through 6.

1. What is the probability that the number is 3?
a. 1/10
b. 3/10
c. 1/3
2. What is the probability that the number is greater than 6?
a. 1/10
b. 3/10
c. 2/5
3. What is the probability that the number is less than or equal to 3?
a. 1/10
b. 3/10
c. 2/5
4. What is the probability that the number is odd?
a. 1/10
b. 2/5
c. 1/2
5. What is the probability that the number is not 8?
a. 1/10
b. 1/2
c. 9/10
6. What is the probability that the number is 4 or 7?
a. 1/10
b. 1/5
c. 2/5

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