Probability Basics

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0 (or 0%)

Front

How do you calculate the probability of an event?

Back

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

Front

If there are 5 green, 6 yellow, 8 blue, and 7 brown marbles, what is the probability of choosing a blue marble?

Back

4/13

Front

What is the total number of outcomes when rolling two dice?

Back

36 (6 sides on the first die x 6 sides on the second die)

Front

What is the probability of rolling a sum of 8 with two dice?

Back

5/36

Front

If the probability of it raining today is 30%, what is the probability that it will NOT rain?

Back

70%

Front

In the word 'ALGEBRA', how many letters are there?

Back

7 letters

Front

What is the probability of choosing a letter other than 'A' from the word 'ALGEBRA'?

Back

5/7