Yes.
Yes. It's a multiple of each of them.
No. One, a counting number, doesn't belong to either of those sets.
No. Rational numbers are those numbers that can be expressed as a ratio of two integers. 2.4, for example, is a rational number (it can be written as the ratio 12/5), but not a counting number.
Numbers that are relatively prime.
If the product of 2 numbers is one, than those 2 numbers are recipricals
Yes.
The product of all those numbers will always be a negative number.
Because it will have those numbers as factors.
The natural numbers are the counting numbers Thus the set m of those counting numbers less than 5 is: m = {1, 2, 3, 4}
Those are 'factors'.
Those numbers are called factors. A pair of those is called a factor pair.
If you simply add numbers the answer is the sum of those numbers.