Urn 1 contains 3 red balls and 2 black balls. Urn 2 contains 5 red balls and 2 black balls. Urn 3 contains 5 red balls and 1 black ball. If an urn is selected at random and a ball is drawn, find the probability that it will be red. Enter your answer as a fraction in simplest form or a decimal rounded to 3 decimal places. Probability of red

A student and a professor each choose a number between 1and 9. What is the probability that the two choose the same number

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.

A bag contains 3 red and 6 blue balls. You draw one ball and then another without replacement. What is the probability that you get one red and one blue ball, in any order? Enter the answer as a decimal fraction. If you need to round, then round to three decimal digits after the decimal point.