Beginning Probability

What is the probability of getting an even number when rolling a die.

• 1/3

• 1/2

• 2/4

• 1/6

What is the probability that the total of two dice will be greater than 9, given that the first die is a 5?

• 2/4

• 5/9

• 1/3

• 25/81

A bag has green and blue marbles. Two marbles are picked without getting replaced. The probability of getting a green marble and then a blue marble is 28%. The probability of selecting a green marble on the first draw is 50%. What is the probability of selecting a blue marble on the second draw, given that the first marble drawn was red?

• 12%

• 38%

• Impossible

• 56%

If set A={2,4,6,8,10} and set B={1,2,3,4,5,6,7,8,9,10}, what would A ∩ B equal.

• 1,2,4,6,8

• 15

• 2,4,6,8,10

• 5

What would be the probability of rolling an odd number on a die.

• 3/6

• 1/4

• 1/2

A card is drawn randomly from a deck of ordinary playing cards. You win $10 if the card is a spade or an ace. What is the probability that you will win the game?

• Impossible

• 1/13

• 17/52

• 4/13

The probability that a student checks out a fiction book is 40%, a non-fiction is 30%, and both fiction and non-fiction is 20%. What is the probability that the student checks out a fiction book, non-fiction, or both?

• 50%

• 0%

• 5%

• 77%

What is the probability of rolling an even number and a prime number on a die?

• 6

• 1

• 1/2

• 2