Probability of Simple Events

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, or as a percentage.

Front

What is a simple event in probability?

Back

A simple event is an event that consists of a single outcome.

Front

How do you calculate the probability of a simple event?

Back

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

Front

What is the probability of flipping a coin and getting heads?

Back

P(heads) = 1/2 or 50%.

Front

If a spinner has 4 equal sections (red, blue, green, yellow), what is the probability of landing on yellow?

Back

P(yellow) = 1/4 or 25%.

Front

What is the probability of rolling a die and getting a number greater than 4?

Back

P(greater than 4) = 2/6 or 1/3.

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.

Front

In a bag with 3 red, 2 blue, and 5 green marbles, what is the probability of picking a blue marble?

Back

P(blue) = 2/10 or 1/5.

Front

What is the probability of spinning a spinner that has 8 equal sections and landing on a section labeled 'A'?

Back

P(A) = 1/8.