BARS::I-17 North and South and I-10 South and West in Phoenix, Arizona

These highway signs are in the warehouse district of downtown Phoenix, Arizona.

The highway signs say...

   +------------+ +------------+ +------------+ +------------+
   |     To     | |     To     | |     To     | |     To     |
   |   South    | |   South    | |   North    | |    West    |
   | Interstate | | Interstate | | Interstate | | Interstate |
   |   Arizona  | |   Arizona  | |   Arizona  | |   Arizona  |
   |     17     | |     10     | |     17     | |     10     |
   |    <---    | |    <---    | |    --->    | |    --->    |
   +------------+ +------------+ +------------+ +------------+
   the numbers are:  17  10  17  10
   
   the math is:  17 + 10 - 17 = 10

   more math:  17 / 17 * 10 = 10

   more math:  10 / 10 * 17 = 17

   more math:  log(10) * 17 = 17log(10)

   number system math:  1716 - 178 + 102 = 10

   observe...
      1716 = 23
      178 = 15
      102 = 2

This roadsign was submitted to RoadSignMath.com on Monday, 12 December 2005 at 7:20am.

Updated::2009.05.11

This BARS was updated because of new functions and rsEvals that have been added to the BARS system.

   the numbers are:  17  10   17  10

   rsAgeEval:  cuberoot(17 + 10) * 17 * log(10) = 51
   * MathBabbler was 51 years young when he found this equation

   rsAgeEval:  17 + 17 * log(10 * 10) = 51
   * MathBabbler was 51 years young when he found this equation

   off-by-one rs42Eval:  17 + 17 + 10 - log(10) = 42 + 1
   * 42 is the "Answer to Life, the Universe, and Everything"

   number system rsPiEval:  (1716 - log(10)) / (17 - 10) = Pi
   * 22/7 approximates Pi (3.14) rounded to nearest hundredth

   fooish math:  sqrt(17^(log(10) + log(10)) = 17

   off-by-one math:  sqrt(17 - log(10)) - cuberoot(17 + 10) = 1

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 31 July 2005
+ added different number systems on 25 May 2008

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