Probability Fractions

Front

What is probability?

Back

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

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator and 'b' is the denominator.

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 apples and 10 oranges in a bag, what is the probability of pulling out an apple?

Back

Probability = 5/(5+10) = 5/15.

Front

What is the probability of rolling a 3 on a six-sided die?

Back

Probability = 1/6.

Front

What is the probability of pulling a red marble from a jar with 7 red marbles and 3 blue marbles?

Back

Probability = 7/(7+3) = 7/10.

Front

If a spinner has 5 red sections and 7 total sections, what is the probability of spinning red?

Back

Probability = 5/7.

Front

What is the probability of selecting a number greater than 5 from 0 to 10?

Back

Probability = 5/11.

Front

What does it mean if an event has a probability of 0?

Back

It means the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means the event is certain and will definitely occur.