BARS::7th St., 7th Ave., 19th Ave. on I-10 West in Phoenix, Arizona

MathBabbler was watching the TV news and there must have been a story about a wreck on westbound I-10. The video clip showed a picture of a road sign that said the following...

[picture coming soon]

   +--------------------+
   | 7th St         1/2 |
   | Central Ave        |
   | 7th Ave      1 1/2 |
   | 19th Ave     2 1/2 |
   +--------------------+
   the numbers are:  7  (1/2)  7  (1 1/2)  19  (2 1/2)

   the math is:  19 - 7 - 7 = (1/2 + 1 1/2) * (2 1/2)

   observe...
      1/2 = 0.5
      1 1/2 = 1.5
      2 1/2 = 2.5

   Pi math:  (19 + 7 - sqrt(2.5 + 1.5) / 0.5) / 7 = 22/7

   observe...
      2.5 + 1.5 = 4 and sqrt(4) = 2
      22/7 approximates Pi (3.14)

   rsHwyEval:  19 - 7 - 7 + 2.5 * (0.5 + 1.5) = 10
   * the road sign is on I-10

   rsAgeEval:  19 / 0.5 + 7 + 7 - sqrt(1.5 + 2.5) = 50
   * MathBabbler was 50 years young when he saw the road sign on TV.

   rs42Eval:  7 / 0.5 + 7 + 19 + sqrt(1.5 + 2.5) = 42
   * the "Answer to Life, the Universe, and Everything"

   another rs42Eval:  19 / 0.5 + 1.5 + 2.5 + 7 - 7 = 42

   [solve for 'n']  19 - n - n = (1/2 + 1 1/2) * (2 1/2)
   [solve for 'n']  19 - 7 - 7 + n * (0.5 + 1.5) = 10
   [solve for 'n']  19 / 0.5 + n + 2.5 + 7 - 7 = 42
   [solve for 'n']  n / 0.5 + 7 + 7 - sqrt(1.5 + 2.5) = 50

A similar, yet different, road sign was found on northbound I-17 in Phoenix.

BARS::Pi and Phi 7th St. Exit on I-17 North in Phoenix, Arizona


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 22 May 2008

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