Basic Probability

Front

What is the probability of drawing an ace of diamonds from a standard deck of cards?

Back

1/52

Front

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

Back

1/2

Front

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

Back

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

Front

How can probability be expressed?

Back

As a fraction, a decimal, or a percent.

Front

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

Back

6 (the numbers 1 through 6).

Front

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

Back

50 (since there are 3 even numbers: 2, 4, 6).

Front

What is the probability of rolling a number greater than 4 on a fair die?

Back

1/3 (the numbers 5 and 6).

Front

What is the sample space when flipping a coin?

Back

{Heads, Tails}.

Front

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

Back

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

Front

If the probability of an event is 0.25, what is the probability of the event not occurring?

Back

0.75 (1 - 0.25 = 0.75).