Homework 1 due Friday, Aug 31
Parity There are 12 problems total on this problem set and we have already took up problems # 1, 3, and 5. Pick four problems out of remaining 9, solve them and write your solutions up in detail. I will be in my office (MS 219) 12-1 on Thursday, Aug 30. Drop by if you want to talk about the homework.
Solutions
Homework 2 due Friday, Sept 14
4.2 11, 12, 14, 20, 31
4.3 15
4.4 7
In each square of a 3 by n table you have a chip colored white, black, or red. There are $n$ chips of each color in the table. Show that you can rearrange the chips in each of the rows so that there are chips of all three colors in every column.

I will be in my office on Thursday, Sept 13, 12-2, come to talk about homework
Solutions
Homework 3 due Friday, Sept 21
6.1 10, 11(b)(ii),(iii), 12(b)(ii),(iii), 22, 29
6.2 10, 12(b), 30
Answers
Here are the problems we have been working on in class and their Solutions
Homework 4 due Friday, Sept 28
6.3 15, 22
6.4 7, 11bde, 14, 20
6.5 4, 13, 16
Answers and Solutions
Homework 5 due Friday, Oct 5 - do not hand in
Midterm 1 practice
I am in my office today (Oct 3), 2-4 and on Friday (Oct 5) 8:55 - 9:55, come if you need to talk about midterm practice. I will not be around on Thursday (Oct 4) but you can e-mail me your questions.
Homework 6 due Friday, Oct 12
7.1 5(b,c), 6(b,c), 27(b,d), 41, 46 ignore 41 and 46
Answers and Solutions
Homework 7 due Friday, Oct 19
7.2 18, 23, 33, 35
7.3 4, 6, 19, 27
7.4 2, 6
Answers and Solutions
Homework 8 due Friday, Oct 26
7.5 4, 12, 20, 21; Show that a union of two countable sets is countable
8.1 37
8.2 7, 32, 13, 38, 52
Answers and Solutions

Homework 9 due Friday, Nov 2
8.3 9, 15, 17, 24
Answers and Solutions

Homework 10 due Friday, Nov 9 - do not hand in
Midterm 2 practice

Homework 11 due Friday, Nov 30
Homework 11
Answers and Solutions
Homework 12 due Monday, Dec 10 - do not hand in
Exam Review
Some Answers and Hints