Basic Probability Flashcard

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event will not happen.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain to happen.

Front

How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).

Front

If a bag contains 5 quarters, 2 dimes, and 4 pennies, how many total coins are there?

Back

Total coins = 5 + 2 + 4 = 11.

Front

What is the probability of picking a quarter from the bag?

Back

Probability of picking a quarter = 5/11.

Front

What is the probability of rolling a six on a fair 6-sided die?

Back

Probability of rolling a six = 1/6.

Front

If an event has a 75% chance of occurring, how is it classified?

Back

It is classified as likely to happen.

Front

What is the probability of an event that is impossible?

Back

The probability of an impossible event is 0.

Front

What is the probability of an event that is certain?

Back

The probability of a certain event is 1.