These highway signs are on southbound AZ Hwy-85 at I-8 in Gila Bend.

The highway signs say...

+----------+ +--------------+ +-----------------------------+ | I-8 East | | 15 ft 11 in | | Phoenix Bypass Route | | Tucson | +--------------+ | To I-10 East | Use Bus. I-8 | +----------+ +-----------------------------+the numbers are: 8 15 11 10 8 * Note: None of the following equations have been checked for correctness. the math is: 8 + 8 + 10 - 11 = 15 more math: 8 / (15 - 11) + 8 = 10 more math: 15 - 11! / 10! = sqrt(8 + 8) more math: cuberoot(8) + (cuberoot(8) * (15 - 11)) = 10 rsPhiEval: (11 % cuberoot(8) + sqrt(15 - 10)) / cuberoot(8) = Phi * Phi is the golden ratio and it approximates 1.61803399 rsPiEval: (11 * cuberoot(8)) / ((15 - 8) * log(10)) = Pi * 22/7 approximates Pi (3.14) rounded to nearest hundredth rs42Eval: 10 * 8 / cuberoot(8) + sqrt(15 - 11) = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsStateEval: 10 * 8 - (15 - 11) * 8 = 48 * Arizona was the 48th state admitted to the Union. off-by-one rsAgeEval: 15 * 8 - 10 * 8 + 11 = 52-1 * RoadHacker was 52 years young when he found these signs. rsTweetLenEval: 15 * 10 - 11 + 8 / 8 = 140 * 140 is the maximum length of a Twitter posting (tweet).

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

**Created:** 13 February 2010

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