Question

if a and b are both odd integers, which expression must always equal an odd integer?

1 a+b
2 a*b
3 a-b
4 a/b

Answer 1

can u explain me how????

Answer 2

sure, for example take the variables a and b to represent numbers.
a+b = b+a = a
In this case b = 0.

Answer 3

I looks to me like it could be both 2 and 4. If both integers are odd, both multiplying and dividing will give an odd interger as an answer.

For example:

21/7 = 3
7 * 3 = 21

Also it helps to indicate the topic in the "School Subject" heading, so those who are knowledgable in that area will be more likely to respond.

I hope this helps a little more. Thanks for asking.

Answer 4

the answer is 1- a+b