What are two events that cannot happen at the same time called?

Such events are called "mutually exclusive".

Mutually Exclusive is the answer. The probability of A or B will equal the sum of Probability of A and the Probability of B for mutually exclusive events.

These are called Mutually exclusive events and an example of this would be if perhaps your considering the probability of a car turning left or right; both cannot happen at the same time.

These events are mutually exclusive

Mutually exclusive events

They are said to be mutually exclusive.

Two, or more, events are called "mutually exclusive" if one event excludes the other.

An example I give is noting the result of tossing a fair coin and recording which face is uppermost when it comes to rest on a horizontal surface.

There are four "mutually exclusive" outcomes, denoted by 'H', 'T', 'E' and 'O'. 'H' stands for the head-side uppermost; similarly for event 'T' for tails-uppermost. The probabilities for each of these events are so close to 0.5 that they can be considered to be one half. 'E' represents the coin settling on an edge; 'O' is the event that the coin doesn't land but goes off into orbit. Both these last events are so rare that their probabilities can be considered to be zero.

These four outcomes cannot happen at the same time and are so called "mutually exclusive".

Mutually exclusive events

It is called Mutually Exclusive Events. A good way to remember this is to think of two events that are happening at the same time and you can only attend one or the other as its not possible to be in two places at once.

These two events are called mutually exclusive.

Mutually Exclusive events

Mutually Exclusive

itis called mutually exclusive

Mutually Exclusive events

mutually exclusive