12/8

A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Mrs. Bryant picks one without looking, replaces it, and picks another one. What is the probability that she picks two that are not orange?

• 9/144

• 9/16

• 3/4

• 5/16

A chorus has 50 girls and 35 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys?

• 1/6

• 7/17

• 3/8

• 13/25

Thomas wants to get 2 black socks from her drawer. He has 5 red, 4 white, and 6 black socks. What is the probability that both socks will be black on the first and second pull from his set of socks?

• 2/5

• 5/14

• 1/7

• 6/15

A boy is fishing in a stock tank. There are 14 carp, 32 bass, 11 trout, and 2 catfish. What is the probability that he catches a catfish, puts it in a cooler, and then catches a bass?

• dependent

• not enough information

• independent

Probability questions about spinners can sometimes be dependent probability.

• True

• False

A bag contains letters of the alphabet. What is the probability of randomly selecting a vowel, keeping it, and selecting another vowel? HINT: y is a vowel in this case.

• 3/65

• 25/635

• 36/65

• 30/635