Simple Probability Practice

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 cannot 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 express probability as a fraction?

Back

Probability can be expressed as a fraction by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the probability of picking a red marble from a bag with no red marbles?

Back

0/28, 0%.

Front

If there are 28 marbles in total, how do you find the probability of picking a specific color?

Back

Count the number of that color marbles and divide by 28.

Front

What is the probability of picking a yellow marble if there are 9 yellow marbles?

Back

9/28 or 32.14%.

Front

What does it mean to express probability as a percent?

Back

Expressing probability as a percent means multiplying the fraction by 100.

Front

What is the probability of drawing a card that is either N or C if P(N or C) = 4/10?

Back

0.4 or 40%.

Front

What is the total number of marbles Jamie has?

Back

Jamie has 28 marbles in total.