Morgan picks two of these letters, at random, without replacement. Morgan now picks a third letter at random. Find the probability that all three letters are the same, .............................................

E8.5 Calculate the probability of simple combined events, using possibility diagrams, tree diagrams and Venn diagrams. (In possibility diagrams, outcomes will be represented by points on a grid, and in tree diagrams, outcomes will be written at the end of branches and probabilities by the side of the branches.)