probability question

Question

two students are chosen at random from a class of 25.

what is the probability that both you and your best friend are chosen?

Answer 1

P(A) and P(B) = P(A) x P(B)

P(A) = you/total number of students in the class = 1/25

P(B) = your friend/total number of songs = 1/24 (One student was already picked, so there are only 24 left)

P(A) and P(B) = (1/25)(1/24) = 1/600