algebra
posted by Bill .
Are the following true or false?
1. The difference of two natural numbers is always a natural number.
2. The sum of two natural numbers is always a natural number.
3. The quotient of two natural numbers is always a natural number.
4. The difference of two natural numbers is always an integer.
5. The product of two natural numbers is always a natural number.
6. The ratio of two natural numbers is always positive
7. The quotient of two natural numbers is always a rational number
I think the answers are :
1. T
2. T
3. F
4. T
5. T
6. T
7. T
is this right?

1. The difference of two natural numbers is always a natural number.  False
2. The sum of two natural numbers is always a natural number.  True
3. The quotient of two natural numbers is always a natural number.  False
4. The difference of two natural numbers is always an integer.  True
5. The product of two natural numbers is always a natural number.  True
6. The ratio of two natural numbers is always positive  True
7. The quotient of two natural numbers is always a rational number  True