marbles drawn out of a bag

Question

bag of marbles contains 3 blue, 1 white, and 5 red marbles. marbles are not returned after drawn. answer the following in fractions.

odds of drawing 1 blue then 1 red?

odds of drawing 1 red then 1 white?

odds of drawing 3 blues in a row?

Answer 1

3/9 * 5/8 = 15/72 ---> 15 to 57 odds

3/9 * 1/8 = 3/72 = 1/24 ---> 1 to 23 odds

3/9 * 2/8 * 1/7 = 6/(72*7) = 1/84 ---> 1 to 83 odds