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 * Whyrs37Eval? 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

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