Basic Probability

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

• 1/3

• 1/4

• 1/2

• 2/3

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

• 1/2 (there are 26 red cards in a deck of 52 cards)

• 1/4 (there are 13 hearts in a deck of 52 cards)

• 1/3 (there are 17 hearts in a deck of 52 cards)

• 1/52 (there is 1 heart in a deck of 52 cards)

What is the definition of an impossible event in probability?

• An event that has a probability of 1.

• An event that has a probability of 0.

• An event that is certain to happen.

• An event that can happen but is unlikely.

How can probability be expressed?

• As a fraction, a decimal, or a percent.

• Only as a fraction.

• Only as a decimal.

• Only as a percent.

If a die is rolled 100 times, what is the expected number of times an even number will appear?

• 30

• 40

• 50

• 60

What is the sample space when flipping a coin?

• {Heads, Tails}

• {Heads, Tails, Edges}

• {Heads, Heads}

• {Tails, Tails}

What is the total number of outcomes when rolling a die?

• 4 (the numbers 1 through 4)

• 5 (the numbers 1 through 5)

• 6 (the numbers 1 through 6)

• 7 (the numbers 1 through 7)

What is a fair die?

• A die that has an equal chance of landing on any of its faces.

• A die that is weighted to favor certain numbers.

• A die that has only one face showing at all times.

• A die that is made of transparent material.

What is the definition of a certain event in probability?

• An event that has a probability of 0.

• An event that has a probability of 0.5.

• An event that has a probability of 1.

• An event that has a probability of less than 1.

What does it mean if the probabilities of all outcomes add up to 1?

• It means that the probability assignment is valid and covers all possible outcomes.

• It indicates that at least one outcome is impossible.

• It suggests that the outcomes are independent of each other.

• It implies that the probabilities are incorrectly calculated.