Probability Retest

Mrs. Mullins is using a random number generator to call students. It uses the numbers 1-30. What is the probability that it will pick the number 8 two times in a row? 

• 8/100
• 1/15
• 1/900
• 1/8

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

• 9/16
• 3/4
• 9/144
• 5/16

If you roll a number cube 36 times, approximately how many times could you expect to land on the 3?( set up a proportion)

• 12 times
• 15 times
• 6 times
• 3 times

Each of the letters of the word PROBABILITY are written on a card and put in a bag. What is the probability of choosing a vowel, assuming Y is not a vowel. 

• 4/11
• 12/55
• 16/121
• 49/100

What is the P(C then F) = _____

• 1/81
• 1/9
• 2/7
• 1/18

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

A bag contains 2 blue marbles, 3 black marbles, and 5 red marbles. If Mrs. Grow pulls two marbles without replacement, what is the probability of them both being blue? 

• 1/45
• 1/5
• 1/20
• 2/5

P(not A) = 
*Remember to simplify.*

• 6/8
• 3/4
• 2/8
• 1/4

If there are 5 marbles in a bag, one is red and 4 are blue, what is the probability of not choosing a red one?

• 1 out of 5
• 25%
• 75%
• 4/5

What is the sample space of rolling a regular number cube one time?

• 1
• 6
• 1, 2, 3, 4, 5, 6
• 7, 8, 9, 10, 11, 12