Help please

Espa A coin is tossed three times. An outcome is represented by a string of the sort HTT (meaning a head on the first toss, followed by two tails). The 8 outcomes are listed in the table below. Note that each outcome has the same probability. For each of the three events in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event. Outcomes D Probability TTH HTH TTT HTT HHH HHT THT THH X ? Event A: A tail on both the first and the last tosses O O O O M Event B: More tails than heads O O O O O O Event C: A tail on the last toss or the second toss (or both) O O O