These jeep trail signs were found in the Joshua Tree National Park in California.

The jeep trail signs say...

+-----------------------+ | Jeep Trail | | Pinkham Canyon 7mi | | Interstate 10 20mi | +-----------------------+ +-----------------------------+ | Roads Not Maintained | | 4-Wheel Drive Vehicles Only | +-----------------------------+ the numbers are: 7 10 20 4 the math is: (20 + sqrt(4)) / 7^log(10) = Pi observe... sqrt(4) = 2 20 + 2 = 22 log(10) = 1 7^1 = 7 22 / 7 equals Pi truncated to two decimal places off-by-one math: 20 / 10 + 4 = 7-1 off-by-one math: 20 - 10 - 7 = 4-1 off-by-one math: sqrt(20 - 4) + 7 = 10+1 off-by-one math: sqrt(20 - 7 - 4) = 4-1 off-by-one math: sqrt(20 - 7 - 4) = sqrt(4)+1

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

**Created:** 11 December 2006

This work is licensed under a Creative Commons License.