The probability of getting any outcome is 100%.The probability of a specific outcome depends on the description of that outcome.Some outcomes are more probable. Some are less probable.
The probability is the number of times that a specific outcome occurred divided by the number of repetitions of the relevant trial.
when a probability experiment is repeated a large number of times, the relative frequency probability of an outcome will approach its theoretical probability.
Do you mean what are all the possible outcomes? Or what is the probability of a certain outcome? Need a little more information.
1/4
One way of finding the probability is to carry out an experiment repeatedly. Then the estimated experimental probability is the proportion of the total number of repeated trials in which the desired outcome occurs.Suppose, for example you have a loaded die and want to find the probability of rolling a six. You roll it again and again keeping a count of the total number of rolls (n) and the number of rolls which resulted in a six, x. The estimated experimental probability of rolling a six is x/n.
The probability of the event occurring.
Each toss outcome has a probability of 1/2; picture copied from the related link. The related link does a good job explaining tree diagrams and probabilities.
The expected outcome is the sum of (each possible occurrence times the probability of that occurrence). For example, the expected outcome of rolling one die is: 1 * 1/6 + 2 * 1/6 + 3 * 1/6 + 4 * 1/6 + 5 * 1/6 + 6 * 1/6 = 3.5.
That's the same as the total probability (1) minus the probability of seven heads. So: 1 - (1/2)7 = 127/128
You carry out the experiment a large number of times. Count the number of times it was carried out (n). Count the number of times in which the particular outcome occurred (x). Then, the experimental probability for that even is x/n.
1/2, or 50% since you are only asking what the probability of the last outcome is.