Question

the faces of a number cube are numbered 1 through 6. Event A= {rolling a 1, 2, or 3}. what is the complement of event A?

Answer 1

Like the complement of the probability? If that's the case, we have Event A Probability = 1/2, so it would be 1/2 that's the answer...otherwise...more details please.

Answer 2

Answer:

The complement of event A is:

Event A' = {rolling a 4, 5, or 6}

Step-by-step explanation:

The complement of an event A is all the posibles cases in which there is not an element of event A.

So, In this case we have 6 posibles elements: rolling a 1, 2, 3, 4, 5 or 6.

The complement of event A={rolling a 1, 2, or 3} is the event in which the number cube doesn't get 1, 2 or 3. That happens when it is rolling 4, 5 or 6 . Then, the complement of Event A that we are going to call A' is:

Event A'= {rolling a 4, 5, or 6}