What are the possible outcomes of tossing a coin twice?

When you toss a coin twice, there are four possible outcomes:

1. Two heads (HH)
2. Two tails (TT)
3. One head and one tail (HT or TH)

Each of the four outcomes is equally likely to occur, with a probability of 1/4 or 25%. This means that if you were to perform this experiment a large number of times, you would expect each of the four outcomes to occur approximately one-quarter of the time.