This road sign was found approaching the 40th Street exit on eastbound I-10 in Phoenix, Arizona.

The road sign says...

+----------------------------+ | 40th St 1/4 | | 143 - 48th St 1 1/4 | | Broadway Rd | | Jct 60 3 | +----------------------------+ the numbers are: 40 (1/4) 143 48 (1 1/4) 60 3 the math is: (143 + (1 1/4) - (1/4) x log(sqrt(40 + 60))) / 3 = 48 observe... sqrt(40 + 60) = sqrt(100) = 10 log(10) = 1 143 + 1 1/4 - 1/4 = 144 144 x 1 = 144 144 / 3 = 48

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

**Created:** 29 April 2007

This work is licensed under a Creative Commons License.