Probability Review

 A card is taken at random from a standard 52-card pack of playing cards. What is the probability that it is a black 8? (reduced)

• 1/26

• 1/13

• 2/52

• 1/52

 A card is taken at random from a standard 52-card pack of playing cards. What is the probability that it is an 8? (reduced)

• 2/26

• 1/13

• 4/52

• 2/52

 A card is taken at random from a standard 52-card pack of playing cards. What is the probability that it is an 6 OR a heart? (reduced)

• 1/52

• 17/52

• 4/52

• 13/52

 There are 10 boys and 12 girls in a class. One of these students is selected at random to represent the class. What is the probability that the student selected is a girl?

• 12/22

• 1/12

• 6/11

• 5/11

What is sample space?

• All possible outcomes.

• A space of a sample.

• Who knows.

• Probability of a space.

How do we find the probability of an event?

• Want / total

• Total/ want

• total / event

• I don't know.

A bag contains 10 blue beans, 6 green beans and 8 red beans. A bean is taken at random from the bag. What is the probability that the bean is a red bean?

• 1/3

• 8/24

• 1/5

• 4/10

A bag contains 20 blue beans, 4 green beans and 8 red beans. A bean is taken at random from the bag. What is the probability that the bean is a blue bean?

• 3/8

• 10/16

• 5/8

• 20/32

A bag contains 10 blue beans, 6 green beans and 8 red beans. A bean is taken at random from the bag. What is the probability that the bean is a red and green bean?

• 1/12

• 48/576

• 1/16

• 14/32

A bag contains 10 blue beans, 6 green beans and 8 red beans. A bean is taken at random from the bag. What is the probability that the bean is a black bean?

• 0

• 1

• 16/32

• 1/32