Give a recursive definition of the set of positive integers that are multiples of 7. b) Review the definition of bit string given on page 12 of Rosen7. Give a recursive definition of the set of bit strings of even length that start with 0. Give a recursive definition of the set of positive integers that are multiples of 7. b) Review the definition of bit string given on page 12 of Rosen7. Give a recursive definition of the set of bit strings of even length that start with 0