- Membership
- Publications
- Meetings
- Competitions
- Community
- Programs
- Students
- High School Teachers
- Faculty and Departments
- Underrepresented Groups
- MAA Awards
- MAA Grants
- News
- About MAA
My age is a number consisting of two digits, ½ of this number is a mean proportional between these two digits, and two years hence, my age will be a third proportional to the same two digits, directly as they stand in my present age. How long will it be before I am sixty years old? (Mathematical Correspondent, U.S., 1804)
"Age," Loci (November 2006)