A raffle is set up to select a winner for concert tickets. Each entry is written on one of four paper types. There are 15 green papers with stripes, 19 orange papers with stripes, 20 green papers without stripes, and 17 orange papers without stripes. One slip of paper is drawn randomly from the pile. What is the probability that the paper will have stripes if the paper is known to be orange? Show all work.

In a bag there are 7 blue, 3 yellow, and 4 pink markers. If five markers are selected at random and the color noted, find the probability that none are yellow given that none are pink.

The mathematics department of a college has 8 male professors, 11 female professors, 14 male teaching assistants, and 7 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a professor or a female.

A golf ball is selected at random from a golf bag. If the golf bag contains 8 yellow ​balls, 13 red ​balls, and 3 green ​balls, find the probability of the following event.   The golf ball is yellow or red.

a box contains five red, three blue and two white poker chips. two are selected without replacement. Find the probability that both are the same color

A golf ball is selected at random from a golf bag. If the golf bag contains 12 brown balls, 9 yellow balls, and 3 orange balls, find the probability of the following event. The golf ball is brown or yellow.

A jar contains 2 red marbles, 9 green marbles, and 8 blue marbles. what is the probability that you draw 5 green marbles in a row if you DO replace the marbles after each draw?

The mathematics department of a college has 6 male​ professors, 11 female​ professors, 10 male teaching​ assistants, and 12 female teaching assistants. If a person is selected at random from the​ group, find the probability that the selected person is a teaching assistant or a female.