This road sign is on westbound Loop 101 in Phoenix, Arizona.

The road sign says...

+--------------------+ | 19th Ave 1/4 | | Jct I-17 3/4 | | 27th Ave 1 | +--------------------+the numbers are: 19 1/4 17 3/4 27 1 the math is: sqrt(19 + 17) / (cuberoot(27)!) - sqrt(1/4) = sqrt(1 - 3/4) more math: sqrt(27 / (19 - 17 + 1)) * (1/4) = 3/4 more math: log(27 - 17! / ((19 - (3/4) / (1/4))!)) = 1 rsPhiEval: (1 + sqrt(sqrt(27 - 19 + 17))) * ((3/4) - (1/4)) = Phi * Phi is the golden ratio and it approximates 1.61803399 rsCardinalityEval: 27 / (19 - 17 + 1) - ((3/4) / (1/4)) = 6 * There are six numbers in this road sign. rs42Eval: 19 + 17 + cuberoot(27) + 1 * ((3/4) / (1/4)) = 42 * 42 is the "Answer to Life, the Universe, and Everything" * note: MathBabbler is not a fan of multiplying by 1 rs48Eval: (19 - 17) * (27^1 - ((3/4) / (1/4))) = 48 * Arizona was the 48th state admitted to the Union. * note: MathBabbler is not a fan of raising expressions to the 1st power rsAgeEval: 27 * (19 - 17) + sqrt(1/4) + sqrt(1 - 3/4) = 55 * RoadHacker was 55 years young when he found this road sign. rsHwyEval: (19 + 17) * cuberoot(27) - 1 - ((3/4) / (1/4))! = 101 * This road sign is on Loop 101. off-by-one math: sqrt(19 - (27 - 17)) - (1/4) - (3/4) = 1+1 ... potential TEDrs

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

**Created:** 08 December 2012 (posted 30 April 2013)

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