# Thread: determine countable or uncountable

1. ## determine countable or uncountable

determine whether each of these sets is countable or uncountable. For those that are countable, exhibit a one to one correspondence between the set of natural nmbers and that set.

1. the odd negative integers

2. the real numbers between 0 and 2

3. integers that are multiples of 10

2. Originally Posted by srw899
determine whether each of these sets is countable or uncountable. For those that are countable, exhibit a one to one correspondence between the set of natural nmbers and that set.
1. the odd negative integers
2. the real numbers between 0 and 2
3. integers that are multiples of 10
You need to show us some effort on your part.
We are not a homework service.

3. dont get defensive...im not "using" people if that is what you mean. It is not your choice what I put on my posts. relax then? Everyone has a different study habit.

4. Originally Posted by srw899
dont get defensive...im not "using" people if that is what you mean. It is not your choice what I put on my posts. relax then? Everyone has a different study habit.
Plato might be a bit blunt but he has a point. What have you done? What do you know?

What does it mean for a set to be countably infinite (your second sentence is more or less a definition which should allow you to do 1 and 3 without much thought)

Question 2 should be just like at least one example that will have been covered in your lectures.

CB

5. Originally Posted by srw899
dont get defensive...im not "using" people if that is what you mean. It is not your choice what I put on my posts. relax then? Everyone has a different study habit.
So apparently you don't know what "defensive" means! There was nothing in Plato's post that was defensive: he was not defending anything he had already said or done because he had not said or done everything. Your post, on the other hand, is very defensive because you are defending your first post.

6. ## Conclusion:

if anyone wants the solution to this problem they can email me.