Urn 1 contains 7 red balls and 1 black ball. Urn 2 contains 1 red ball and 2 black balls. Urn 3 contains 5 red balls and 2 black balls.

A restaurant offers a $12 dinner special that has 7 choices for an appetizer, 12 choices for an entree, and 6 choices for a dessert. How many different meals are available when you select an appetizer, an entree,and a dessert?

In a fuel economy study, each of 3 race cars is tested using 5 different brands of gasoline at 7 test sites located in different regions of the country. If 2 drivers are used in the study, and test runs are made once under each distinct set of conditions, how many test runs are needed?

${\displaystyle {(-3j^{-5}\cdot k^6)}^4}$

A manager must form a team of 5 from among 5 employees from group A and 6 employees from group B. If all employees have an equal chance of being selected, what is the approximate probability that a randomly selected group of 5 will consist of 2 employees from group A and 3 employees from group B?

${\displaystyle {(3t^2-4s)}^2}$

A dresser drawer contains one pair of socks with each of the following colors: blue, brown, red, white and black. Each pair is folded together in a matching set. You reach into the sock drawer and choose a pair of socks without looking. You replace this pair and then choose another pair of socks. What is the probability that you will choose the red pair of socks both times?