These highway signs are on westbound I-10 near Casa Grande, Arizona. These signs were found on Pi Day 2009.

The highway signs say...

+-----------+ +---------------+ +----------------+ | I-10 West | | Exit 199 | | Exit 200 | | Phoenix | | I-8 West | | Sunland Gin Rd | +-----------+ | San Diego | | Arizona City | | 1 Mile | | 1/2 Mile | +---------------+ +----------------+the numbers are: 10 199 8 1 200 (1/2) the math is: sqrt(199 + 1 + 200) / 10 = sqrt(8 * (1/2)) rs42Eval: sqrt(199 + 1 + 200) / (1/2) + 10 - 8 = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsHwyEval: (200 + 199 + 1) / 8 / 10 / (1/2) = 10 * These signs are on I-10 rsAgeEval: (200 + 199 + 1) / 8 + log(10)^(1/2) = 51 * RoadHacker was 51 years young when he found these signs more math: 10 * cuberoot(8) = (199 + 1 + 200)^(1/2) more math: 10 - log(199 - 200 * (1/2) + 1) = 8 more math: (cuberoot(summation(8, 10)) - (200 - 199)) * (1/2) = 1 more math: 1 / (1/2) + 200 - 199 = sqrt(avg(8, 10))

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

**Created:** 06 April 2009

This work is licensed under a Creative Commons Attribution 3.0 United States License.