This road sign at RoadSignMath.com is near Frederick, Maryland. [MathBabbler extends a Thank You to RoadSignMath.com for making the road sign available via Creative Commons Attribution Share Alike.]

The road sign says...

+-------------------------+ | MD Hwy-85 Jct 1 | | I-70 Jct US Hwy-15N 2 | | Jefferson St 3 | +-------------------------+the numbers are: 85 1 70 15 2 3 the math is: 85 - 70 - 15 = 3 - 2 - 1 more math: (85 % (70 % 15) + 1) / 2 = 3 rsPhiEval: (1 + sqrt(sqrt((85 - 70) * 15) / 3)) / 2 = Phi * Phi is the golden ratio and it approximates 1.61803399 rsCardinalityEval: (85 - 70) / 15 - 1 + 2 * 3 = 6 * There are six numbers in this road sign. rsStateEval: (85 - 70) / 15 + 1 + 2 + 3 = 7 * Maryland was the 7th state admitted to the Union. rs37Eval: 85 - 70 + 15 + 3! + 2 - 1 = 37 * Whyrs37Eval? 37 Heaven @ http://thirty-seven.org rs42Eval: 85 - 70 + 15 + (1 + 2)! + 3! = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsAgeEval: (85 - 70 + 15) * 2 - 3 - 1 = 56 * MathBabber was 56 years young when he found this equation. off-by-one rsHwyEval: 70 * (2 + 3) - 85 + sqrt(1 + 15) = 270-1 * This road sign is on I-270.

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

**Created:** 24 December 2013 (posted 25 December 2013)

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