Find the probability of getting a 2, 4, 5, or 6 when you roll a standard six-sided die

You have a 30-sided dice. Your friend Hugo has three favorite numbers: 5, 3, and 10. What is the probability that you roll one of his favorite numbers? Enter your answer as a fraction

A radio disc jockey has 8 songs on this upcoming hour's playlist: 3 are rock songs, 2 are reggae songs, and 3 are country songs. The disc jockey randomly chooses the first song to play, and then she randomly chooses the second song from the remaining ones. What is the probability that the first song is a rock song and the second is a country song? Write your answer as a fraction in simplest form.

You randomly select one card from a​ 52-card deck. Find the probability of selecting the king of diamonds or the two of hearts.