Mastering Probability Fractions

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a fraction, decimal, or percentage.

Front

How do you calculate the probability of an event?

Back

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

Front

What is a favorable outcome in probability?

Back

A favorable outcome is the specific result of an event that we are interested in.

Front

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

Back

The total number of outcomes when rolling a standard die is 6.

Front

What is the probability of rolling a 3 on a standard die?

Back

The probability of rolling a 3 is 1/6.

Front

If a bag contains 5 red and 3 blue marbles, what is the probability of drawing a blue marble?

Back

The probability of drawing a blue marble is 3/8.

Front

What does it mean to not draw a specific item in probability?

Back

Not drawing a specific item means calculating the probability of all other outcomes except that item.

Front

What is the probability of not drawing a blue ball from a bag with 5 blue, 3 green, and 2 red balls?

Back

The probability of not drawing a blue ball is 3/10.

Front

How do you express probability as a fraction?

Back

Probability can be expressed as a fraction by placing the number of favorable outcomes over the total number of outcomes.

Front

What is the probability of selecting a girl from a class of 9 girls and 6 boys?

Back

The probability of selecting a girl is 9/15.