BARS::Alley Pet Sign in Tempe, Arizona

This pet sign is in an alley near Optimist Park in Tempe, Arizona.

The pet sign says...

+------------------+
| Please Leash and |
|  Clean Up After  |
|    Your Pets     |
|   TCC SEC 6-30   |
|   TCC SEC 6-31   |
+------------------+
   the numbers are:  31  30  6  6

   the math is: 30 + 6 / 6 = 31
   more math:  30 / 6 = sqrt(31 - 6)

   rsAgeEval:  31 + 30 - 6 / 6 = 60
   off-by-one rsAgeEval:  6! / 30 + 31 + 6 = 60+1
   * TempeHiker was 60 years young when he found this sign.
   * TempeHiker was closer to 61 than 60 when he found this sign.

   rs42Eval:  6 * (6 + 31 - 30) = 42
   rs42Eval:  6 * (6 + 31! / 30!) = 42
   off-by-one rs42Eval:  sqrt(31 - 6) + 30 + 6 = 42-1
   off-by-one rs42Eval:  sqrt(30 + 6) + 31 + 6 = 42+1
   * 42 is the "Answer to Life, the Universe, and Everything"

   rs37Eval:  31 + 6 + 30 % 6 = 37
   rs37Eval:  30 + 6 + 31 % 6 = 37
   * Why rs37Eval? 37 Heaven @ http://thirty-seven.org

   rsCardinalityEval:  30 / 6 - 31 % 6 = 4
   rsCardinalityEval:  6 - sqrt(sqrt(31 - 6)! / 30) = 4
   * There are four numbers in this sign.

   BARSfunc rs42Eval:  31 + 6 + 6 - log(spf(30)) = 42
   BARSfunc rs42Eval:  31 + spf(6) + spf(6) + log(spf(30)) = 42
   BARSfunc rs42Eval:  reverse_digits(31) + 30 - 6 / 6 = 42
   * 42 is the "Answer to Life, the Universe, and Everything"
   * spf(n) = the sum of the prime factors of n
     domain: n must be a composite number
   * 30 is composite; spf(30) = 2+3+5 = 10
   * 6 is composite; spf(6) = 2+3 = 5
   * reverse_digits(n) = the digits of n reversed
     domain:  n must be a prime number
   * 31 is prime; reverse_digits(31) = 13

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 02 March 2018

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