Probability

Front

What is the definition of a union of two sets?

Back

The union of two sets A and B, denoted as A ∪ B, is the set of elements that are in A, in B, or in both.

Front

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∪ B?

Back

A ∪ B = {1, 2, 3, 5, 7, 9}

Front

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

Back

The probability of an event that is certain to happen is 1.

Front

What is the probability of an event that is impossible?

Back

The probability of an event that is impossible is 0.

Front

How do you calculate the probability of a single event?

Back

The probability of a single event is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is the probability of spinning green if there are 4 equal sections: red, blue, green, yellow?

Back

The probability of spinning green is 1/4.

Front

What is the intersection of two sets?

Back

The intersection of two sets A and B, denoted as A ∩ B, is the set of elements that are common to both A and B.

Front

If A = {red, blue, yellow} and B = {Red, yellow, green}, what is A ∩ B?

Back

A ∩ B = {yellow}.

Front

What is the formula for the probability of independent events?

Back

For independent events A and B, the probability of both A and B occurring is P(A) * P(B).