Please hel You are one of ten students performing in a school talent show. The order of the performances is determined at random. The first five performers go on stage before the intermission.
a. What is the probability that you are the last performer before the intermission and your rival performs immediately before you? Express your answer as a fraction in simplest from
b. What is the probability that you are not the first performer? Express your answer as a fraction in simplest form.