#### Answer

roster: G={1, 3, 5, 7, 9, 11, 13, 15, 17}
set builder: G={g|g is a natural number, g is not a multiple of 2, g$\lt$18}

#### Work Step by Step

To write the set in roster form, you list all the possible values that belong to the set. In this case, the set includes odd numbers that are whole numbers, are greater than 0, and are less than 18.
To write a set in set builder notation, you list all the known properties of the elements that belong to the set.