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 rolling a 3 on a standard six-sided die?

Back

P(3) = 1/6 or approximately 16.67%.

Front

If a spinner has 4 equal sections, what is the probability of landing on any one section?

Back

P(any section) = 1/4 or 25%.

Front

What is the probability of getting heads when flipping a fair coin?

Back

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

Front

In a bag of 10 marbles (3 red, 2 blue, 5 green), what is the probability of picking a red marble?

Back

P(red) = 3/10 or 30%.

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

P(heart) = 13/52 = 1/4 or 25%.

Front

If there are 5 blue sections and 5 red sections on a dartboard, what is the probability of landing on a blue section?

Back

P(blue) = 5/10 = 1/2 or 50%.

Front

What is the probability of selecting a Yorkshire terrier from a group of 18 dogs with 4 Yorkshire terriers?

Back

P(Yorkshire terrier) = 4/18 = 2/9.