Simple Probability

Front

What is probability?

Back

Probability is the chance that some event will occur.

Front

What is the probability of selecting a green marble if there are 5 green marbles out of 19 total marbles?

Back

5/19

Front

If the probability of an event is 30%, what is the probability that the event will NOT occur?

Back

70%.

Front

What is the probability of selecting an orange candy if all candies are orange?

Back

100%.

Front

What is the probability of landing on a number less than 7 if the spinner has numbers 1 to 8?

Back

3/4.

Front

How do you calculate the probability of an event?

Back

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

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event will not occur.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain to occur.

Front

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

Back

2/10 or 1/5.

Front

What is the range of probability values?

Back

Probability values range from 0 to 1.