These road signs were found on westbound I-10 in Phoenix, Arizona.

The road signs say...

+-------------+ +-------------+ +----------------+ +-----------+ | HOV 10 West | | 10 West | | Exit 1A | | Exit 1B | +-------------+ | Los Angeles | | 10 East Tucson | | 24th St | +-------------+ | 51 North | | Exit Only | | Exit Only | +-----------+ +----------------+ the numbers are: 10 10 1 10 51 1 24 A B the math is: (10 - 10 + 10) x sqrt(24 + 1) + 1 = 51 observe... A = 10 - 10 + 10 = 10 B = sqrt(24 + 1) = sqrt(25) = 5 A x B = 10 x 5 = 50 50 + 1 = 51

**Creator:** Gerald D. Thurman
[gthurman@gmail.com]

**Created:** 25 March 2007

This work is licensed under a Creative Commons License.