Discrete mathematics

I have a total of around 23 problem sets for Discrete Math on topics: Recursive Thinking and Basic Counting Techniques from textbook "Essentials of Discrete Mathematics - Second Edition by David J. Hunter Problem sets are: chapter 3.1: 15, 16, 17, 19, 20, 22 chapter 3.2: 3, 4, {5 or 6 (your choice)}, 7, 8, 9, 18 chapter 4.1: 1,2,3,5,6,9,12,18 PLUS the worksheet attached on this project. PLEASE NOTE: so you won't get confused or make any mistake, I have named the files as you can see base on chapter numbers. so problem sets on chapter 3.1 will be found on the images named 3.1a and 3.1b then look up the problem set numbers on the page. Let me know if you have any question.