These road signs were found approaching the University Drive exit on eastbound I-10 in Phoenix, Arizona.

The road signs say...

+----------+ +-------------------------+ | Lane | | University Dr 1/4 | | Ends | | 40th St 1 | | 1/2 Mile | | 143 - 48th St 2 | +----------+ | Broadway Rd | +-------------------------+ the numbers are: (1/2) (1/4) 40 1 143 48 2 the math is: 48 - 40 + 2 + ((1/2) / (1/4)) = sqrt(1 + 143) observe... 1/2 / 1/4 = 2 48 - 40 + 2 + 2 = 12 sqrt(1 + 143) = sqrt(144) = 12

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

**Created:** 29 April 2007

This work is licensed under a Creative Commons License.