On the Reversing of Digits

Authors

Leonard F. Klosinski, Santa Clara University
Dennis C. Smolarski, Santa Clara UniversityFollow

Document Type

Article

Publication Date

9-1969

Publisher

Taylor & Francis

Abstract

A short time ago the following article appeared in the newspaper of a small western city:

A mathematics professor complained to the policeman that a student had almost run him down as he attempted to cross the street.

"Did you get his license number?" asked the policeman.

"Not exactly," the professor said. "But I do remember that if the number was doubled and then multiplied by itself, the square root of the product was the original number with the integers reversed."

Recommended Citation

Klosinski, L. F., & Smolarski, D. C. (1969). On the Reversing of Digits. Mathematics Magazine, 42(4), 208–210. https://doi.org/10.1080/0025570X.1969.11975962