Suppose that a and b are digits, not both nine and not both zero, and the repeating decimal 0 . \overline{a b} is expressed as a fraction in lowest terms. How many different denominators are possible?
Answer Choices
A. 3
B. 4
C. 5
D. 8
E. 9
Suppose that a and b are digits, not both nine and not both zero, and the repeating decimal 0 . \overline{a b} is expressed as a fraction in lowest terms. How many different denominators are possible?
Answer Choices
A. 3
B. 4
C. 5
D. 8
E. 9