1. The basket has 9 blue ribbons, 7 red ribbons, and 6 white ribbons. Find the probability that the ribbon selected at random will be red?
2. There are seven blue chips and nine green chips in the box. If sally takes the chip out of box and then Alex takes a chip, find probability that both choose blue chips?
3. The rack has 8 short sleeved shirts and 6 long sleeved shirts. Mr. Lemke chooses one shirt returns it to rack and then chooses another. Find probability both shirts selected were short sleeved?
4. There are eight members of womens basketball team and 7 members of mens track team at the athletic club meeting. Find probability that the committee of three selected at random will have at least two members of basketball team?
5. 6 coins are tossed. Find probability that at least four of them will show heads?
6. 30 people in the class now purchased tickets to the dance. 20 people now purchased tickets to concert. Remaining 5 people in class purchased tickets to both dance and concert. If one person from class is chosen at random, find probability that he or she has tickets to either dance or concert?
7. The pair of dice is rolled. Determine probability that numbers showing on dice match, provided that their sum is less than 10.