I have nine cats.

A nineteen-year-old girl is getting ready to go to college.

I got married at the age of thirty-nine.

He retired at the age of sixty-nine.

I got married at the age of twenty-nine.

I bought forty-nine apples.

I read fifty-nine books.

We flew eighty-nine balloons.

We flew ninety-nine balloons.

He retired at the age of seventy-nine.