Question: what is the difference of two odd integers?
Answer: Odd numbers are of the form 2k + 1, where k is an integer. Even numbers are of the form 2k. Since a and b are both odd numbers, then they are of the form 2a + 1 and 2b + 1, where a and b are integers, like k. ... Since, the difference of the two odd integers is of the form 2k,then it is an even number.