BARS::Off-By-One On AZ Hwy-89 Three Miles North of Yarnell, Arizona

This road sign was found three miles north of Yarnell, Arizona, on AZ Hwy-89.

The road sign says...

   +--------------+
   | Yarnell    3 |
   | Congress  13 |
   | Phoenix   81 |
   +--------------+
   the numbers are:  3  13  81

   the off-by-one math is:  13 - 3 = sqrt(81) + 1
Update::2013.07.11

19 firefighters died while fighting a fire near Yarnell.

   the numbers are:  3  13  81

   the math is:  81 % 13 = 3

   more math:  truncate(81 / 13) = 3!

   BARSfunc rsAgeEval:  81 - reverse_digits(13) + 3! = 56
   * MathBabbler was 56 years young when this update was posted.
   * reverse_digits(n) = the digits of n reversed
     domain:  n must be a prime number
   * 13 is prime; reverse_digits(13) = 31

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 24 September 2006

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