Look at the number farthest to the left. This will be the least odd number in the set.
Look at the number farthest to the right. This will be the greatest odd number in the set of values.
Look at spaces in between the odd numbers. Even though these spaces wouldn't be marked on an odd number line, they represent even numbers. For instance, if you have a marker for the numbers 5 and 7 on an odd number line, the space between 5 and 7 represents the value 6.