Can someone walk me through this with explanations for each step? Thank you

The random variable Y has a geometric(p) distribution if it models the number of successive independent trials until the first success (p = probability of success on any individual trial). In this case, P(Y = k) = p(1 -p)* ', ke {1, 2,3. . . .} Let. Y...., Y, be an independent random sample from a geometric(p) distribution. Find the MLE of p