These road signs were found by ColletteC during the spring 2009 semester.

The road signs say...

+----------------------------------------+ +------------+ | Business I-40 US-180 US-89 | | Highway 89 | | Flagstaff Page | +------------+ | Grand Canyon Grand Canyon | | South Rim 78 South Rim 79 | | North Rim 195 | +----------------------------------------+the numbers are: 40 180 78 89 79 195 89 the math is: 195 + 180 - 89 - 89 - 79 - 78 = 40 more math: 40 / (89 - 79) + 89 - 78 + 180 = 195 observe... 195 - 180 + 79 - 78 = 16; sqrt(16) = 4; sqrt(4) = 2 rs42Eval: sqrt(sqrt(195 - 180 + 79 - 78)) + 89 - 89 + 40 = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsAgeEval: sqrt(sqrt(195 - 180 + 79 - 78)) + sqrt(89 * 89) - 40 = 51 * MathBabbler was 51 years young when he found this equation

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

**Created:** 17 May 2009

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