Final answer:
Probability is a number between 0 and 1 that represents the likelihood of an event occurring. Equal probabilities occur when two events are equally likely. For example, when tossing a fair coin, the probabilities of getting a head or a tail are both 0.5.
Step-by-step explanation:
Probability is the likelihood that a certain event will occur. It is a number between 0 and 1, where 0 indicates that the event is guaranteed not to occur and 1 indicates that it is guaranteed to occur. If two events are equally likely, they have equal probabilities. For example, if you toss a fair coin, the probability of getting a head is 0.5 and the probability of getting a tail is also 0.5.