Probability

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, where 0 means the event will not happen and 1 means it will definitely happen.

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an impossible event?

Back

0 (or 0%)

Front

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

Back

1/4 or 25%.

Front

How do you calculate the probability of an event?

Back

Probability = (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

1/6 or approximately 16.67%.

Front

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

Back

70%.

Front

What is the probability of spinning an even number on a spinner divided into 6 equal parts (1, 2, 3, 4, 5, 6)?

Back

3/6 or 50%.

Front

What is the theoretical probability of rolling a sum of 10 with two dice?

Back

1/12.

Front

If there are 10 candies in a bag (2 orange, 3 red, 5 green), what is the probability of selecting an orange candy?

Back

2/10 or 20%.