Compound Probability

A bag contains 5 red balls and 3 blue balls. If two balls are drawn at random without replacement, what is the probability that both balls are red?

• 3/8

• 4/9

• 2/7

• 5/14

A box contains 4 green marbles, 3 yellow marbles, and 5 blue marbles. If one marble is drawn at random, what is the probability that it is either green or yellow?

• 9/12

• 3/12

• 2/12

• 7/12

A deck of cards contains 52 cards, including 4 aces. If two cards are drawn at random without replacement, what is the probability that both cards are aces?

• 1/52

• 1/221

• 1/104

• 1/156

A jar contains 10 red candies, 8 green candies, and 6 blue candies. If two candies are drawn at random without replacement, what is the probability that both candies are green?

• 7/69

• 8/69

• 1/69

• 15/69

A bag contains 6 red balls, 4 blue balls, and 2 green balls. If one ball is drawn at random and then replaced before drawing again, what is the probability that the first ball is red and the second ball is blue?

• 1/6

• 1/2

• 1/4

• 1/12

A box contains 12 black pens, 8 blue pens, and 5 red pens. If two pens are drawn at random without replacement, what is the probability that both pens are black?

• 1/6

• 3/4

• 7/20

• 11/50

A jar contains 15 red marbles, 10 blue marbles, and 5 green marbles. If one marble is drawn at random and then replaced before drawing again, what is the probability that the first marble is red and the second marble is green?

• 1/12

• 1/30

• 1/20

• 1/25

A deck of cards contains 52 cards, including 4 kings. If two cards are drawn at random without replacement, what is the probability that both cards are kings?

• 1/13

• 1/26

• 1/221

• 1/39

A bag contains 8 red balls, 6 blue balls, and 4 green balls. If two balls are drawn at random without replacement, what is the probability that the first ball is red and the second ball is blue?

• 8/51

• 6/51

• 4/51

• 2/51

A box contains 10 black pens, 7 blue pens, and 3 red pens. If one pen is drawn at random, what is the probability that it is either black or blue?

• 10/20

• 7/20

• 17/20

• 3/20