BARS::Train Station Parking Signs in Naperville, Illinois

These parking signs are at the train station in Naperville, Illinois.

The parking signs say...

   +-------------+  +-------------------+
   | No Parking  |  |   9 Hour Parking  |
   | Stopping or |  |     8 am-5 pm     |
   |   Standing  |  |      Mon-Fri      |
   |    6-8 am   |  |   Remember Your   |
   |    5-7 pm   |  |   Space Number    |
   +-------------+  | Pay $2 at Station |
                    +-------------------+
   the numbers are:  6  8  5  7  9  8  5  2

   the math is:  8 - 6 + 7 - 5 = 9 - 8 + 5 - 2
   * left-side sign equals right-side sign

   more math:  (9 + 8 + 8) / 5 / 5 + 7 - 6 = 2

   more math:  9 * 8 - 8 * 7 - 5 - (6 / 2)! = 5

   more math:  (5 * sqrt(9 + 8 + 8))^(7 - 6) = 5^2

   more math:  (9 - 8) + (8 - 7) + (6 - 5) + 2 = 5
   * ()s used because that's how MathBabbler mentally evaluated it

   rsPhiEval:  ((9 - 8) + (8 - 7) - (6 - 5)) + sqrt(5)) / 2 = Phi
   * Phi is the golden ratio and it approximates 1.61803399

   rsPiEval:  ((8 * 7) - 9 - 5 / 5 - 2) / (8 + 6) ~= Pi
   * 22/7 approximates Pi rounded to nearest hundredth (3.14)
   * 3.1415926535897932384626

	rs21Eval:  7 * (5 - 2) * (6 + 5 - 9 - 8 / 8) = 21
	* Illinois was the 21st state admitted to the Union.

   rs37Eval:  9 + 8 + 8 + 7 + 6 - (5 / 5)^2 = 37
   * Why rs37Eval? 37 Heaven @ http://thirty-seven.org

   rs42Eval:  (6 + 5 + 5 * 2) * ((9 - 8) + (8 - 7)) = 42
   * 42 is the "Answer to Life, the Universe, and Everything"

   rsAgeEval:  9 + 8 + 8 + 7 + 6 + (5 + 5) * 2 = 58
   * MathBabbler was 58 years young when he found these parking signs.

   off-by-one rsCardinality:  (9 - 8) + (8 - 7) + (6 - 5) + (5 - 2)! = 8+1
   * There are eight numbers in these parking signs.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 12 January 2016

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