1.There are 80 people at a meeting. They each shake hands with everyone else. How many total handshakes take place.

2.There are "n" people at a meeting. They each shake hands with everyone else. How many total handshakes take place? Write the expression in terms of "n".

3.Suppose that a single character is stored in a computer using eight bits. How many bit patterns have exactly 4 zeros?

4.How many even three digit numbers are there between 300 and 999 that do not contain the digit 2?

5.Considerthesets2x+c|xN,c=0,1.Dothesesetspartition? 6.How many ways can 4 students be seated in a class with 15 desks?

7.You have 6 shirts, 3 shorts, and 2 pairs of shoes. How many different outfit combinations do you have?