Probability

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating probability?

Back

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

Front

If a bag contains 8 red marbles and 6 purple marbles, what is the total number of marbles?

Back

Total marbles = 8 (red) + 6 (purple) = 14 marbles.

Front

What is the probability of selecting a purple marble from a bag with 8 red and 6 purple marbles?

Back

Probability = 6 (purple) / 14 (total) = 3/7.

Front

What is theoretical probability?

Back

Theoretical probability is the likelihood of an event happening based on all possible outcomes.

Front

In a bag with 3 red, 2 blue, and 4 yellow marbles, what is the probability of pulling a red marble?

Back

Probability = 3 (red) / 9 (total) = 1/3.

Front

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

Back

Probability of not occurring = 100% - 30% = 70%.

Front

What is the probability of randomly choosing a red ball from a basket with 5 red, 3 yellow, and 2 green balls?

Back

Probability = 5 (red) / 10 (total) = 1/2.

Front

How do you calculate the probability of multiple outcomes?

Back

Add the probabilities of the individual outcomes.

Front

In a jar with 2 pink, 6 red, and 4 blue marbles, what is the probability of picking a red or blue marble?

Back

Probability = (6 red + 4 blue) / 12 total = 10/12 = 5/6.