Title

On the Reversing of Digits

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."

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