Range[1, 9, 2]* Range[3, 11, 2] comes out to be {3, 15, 35, 63, 99} why is it 3,15,35,63,99?
...and if you were trying to compute the dot product, look up Dot in the Documentation Center.
Why should it be anything else?
In slightly more detail:
(1) What result are you expecting that is different?
(2) What have you checked in documentation that you are not understanding?