This road sign was found on AZ Hwy-89 twenty-one miles south of Winslow, Arizona.

The road sign says...

+----------------+ | Winslow 21 | | Jct I-40 25 | +----------------+ the numbers are: I 40 21 25 the math is: log(40 / (25 - 21)) = I observe... I is Roman numeral one off-by-one math: (21+1) / ((40 / sqrt(25))-1) = 22 / 7 = piNote: RoadSignMath.com does not use roman numerals nor do they allow the use of the log() function.

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

**Created:** 27 September 2006

This work is licensed under a Creative Commons License.