What is the two digit odd number?

Answer 1

There is no such thing as "the 2 digit odd number": there are 45 such numbers. They are numbers of the from 10p+q where p and q are positive integers and q is one of {1, 3, 5, 7, 9}.

Answer 2

Numbers 11 and 13 are the first two odd number digits, counting from 1, 2, 3, and so on.

Answer 3

19