Hi,

I hope someone can help me tease out the logic in these in order to determine whether they are true or false.

1) {2s+1|s∈ℝ}=ℝ

I would think that this would be true since any real number for "s" would result in 2s + 1 equating to a real number. Is this right to think?

2) ℕ ⋂ ℕ = ℕ

Essentially this statement is saying that the intersection of the natural numbers with the natural numbers, is the natural numbers - therefore, I believe that this statement is true.

Let me know what you think!

- Olivia