Probability

What is the probability of rolling a sum of 7 with two dice?

• 1/4

• 1/8

• 1/12

• 1/6

If a coin is flipped twice, what is the probability of getting at least one head?

• 0.75

• 0.25

• 1.00

• 0.50

A bag contains 3 red balls and 2 blue balls. What is the probability of drawing a red ball?

• 3/5

• 2/5

• 1/2

• 4/5

If two events A and B are independent, what is P(A and B)?

• P(A and B) = P(A) / P(B)

• P(A and B) = P(A) + P(B)

• P(A and B) = P(A) - P(B)

• P(A and B) = P(A) * P(B)

What is the conditional probability of event A given event B, if P(A) = 0.5 and P(B) = 0.4 and P(A and B) = 0.2?

• 0.5

• 0.8

• 0.1

• 0.3

In a deck of 52 cards, what is the probability of drawing a heart?

• 1/5

• 1/2

• 1/4

• 1/3

If the probability of event A is 0.6 and the probability of event B is 0.3, what is the probability of either A or B occurring if they are independent?

• 0.5

• 0.72

• 0.9

• 0.4

What is the probability of drawing a king from a standard deck of cards?

• 1/52

• 1/4

• 1/26

• 1/13

If a die is rolled, what is the probability of rolling an even number?

• 3/6

• 2/5

• 1/3

• 1/2

What is the probability of getting two tails when flipping a coin three times?

• 5/8

• 3/8

• 1/2

• 1/8