Question

Help me with algebra please

Answer 1

The answer is the first one: 1,3,5,7,9
Here's why:
They are all odd numbers found in between -1 and 10. It wouldn't be the third one since those are all even numbers.

I hope this helps:)

Answer 2

The number between -1 and 10 means start counting from 0 and stop just before 10. Which is 9. And only include the odd integers. 

So, the set will be {1, 3, 5, 7, 9}.

EDIT:

I want to give a thank you to Helpwithschool for finding a mistake in my answer!