4. Seven cards each containing one of the following letters C,B,T,A,E,M and H are placed in a hat. Each letter is used only once. Stu will pull four cards out at random and without replacement. what is the probability that Stu pulls out M,A,T,H in order?? express your answer as a common fraction.
5. If x and y are positive integers with x+y<40, what is the largest possible product xy?
6. Consider the rectangular region with vertices at (5,4), (-5,4), (-5,-4) and (5,-4). how many points with integer coordinates will be strictly in the interior of this rectangular region?
7. What is the degree measure of an interior angle of a regular pentagon?