CHAPTER 3 
CHAPTER 2&3:  CLICK HERE FOR SAMPLE EXAM4
CHAPTER 3&4:  CLICK HERE FOR REAL  EXAM5
section example

exercises:  DO ODD NUMBERS AFTER READING EXAMPLES.
3.1
1

3; 1, 3, 5
2 13; 11, 13, 15
3 17; 15, 17, 19 
4 25; 23, 25, 27 
5 35; 33, 35
6 37; 37, 39
7 39; 39, 41
3.2
1

9; 7, 9, 11
2 17;1 5, 17, 19
3 13; 11, 13
4 23; 21, 23, 25 
5 5; 3, 5, 7
6 29; 27, 29, 31
7 37; 35, 37, 39
3.3
1

 3,7; 1, 3, 7, 9, 
2  15,19; 13, 15, 19, 21
3

 23; 21, 25
4  31; 29, 31, 33
5  35; 33, 35, 37
6  41; 39, 41, 43 
3.4
1  1; 1, 3
2  17; 15, 17, 19