Probability Unit Practice

Kai is flipping a fair coin. What is the probability that he gets heads?

• 1

• 1/2

• 1/3

• 1/4

Benjamin is playing a game where he rolls a fair die. What is the probability of rolling an even number?

• 1/2

• 1/3

• 2/3

• 1/6

Abigail has a bag containing 3 red, 5 blue, and 7 green marbles. What is the probability of her drawing a blue marble?

• 1/5

• 1/3

• 7/15

• 1/2

Maya and Daniel are playing a game where they flip a coin twice. What is the probability of getting at least one heads?

• 1/4

• 1/2

• 3/4

• 1/8

In a game, you win $20 with a probability of 0.3, and lose $10 with a probability of 0.7. What is the expected value of this game?

• $6

• -$3

• $17

• $-1

A die is rolled once. What is the probability of rolling a number greater than 4?

• 1/6

• 1/3

• 1/2

• 2/3

A standard deck of 52 cards contains 13 hearts. What is the probability of drawing a heart?

• 1/4

• 1/3

• 1/2

• 1/52

In a school raffle, there are 200 tickets sold, and you bought 5. What is the probability of winning?

• A) 1/40

• B) 1/50

• C) 5%

• D) 1/200

A standard deck of 52 cards contains 13 spades. What is the probability of drawing two spades in a row from a shuffled deck, without replacement?

• 1/16

• 1/17

• 1/4

• 1/2

What is the expected value of rolling a fair six-sided die, where you win the number shown in dollars?

• $3.50

• $3

• $4

• $2.50