This parking sign is in Old Town (downtown) Scottsdale, Arizona.

The parking sign says...

```   +--------------+
| 3 Hr Parking |
|   Mon - Fri  |
|   7am - 5pm  |
+--------------+
```
```   the numbers are:  3  7  5

the math is:  avg(3, 7) = 5
more math:  avg(5, 7) = 3!
more math:  sqrt(summation(3, 7)) = 5
* summation(3, 7) = 3+4+5+6+7 = 25

primeRS:  All of the numbers in the sign are prime.
consecutivePrimesRS:  The numbers are consecutive prime numbers.
* 1st time consecutivePrimesRS used

rs37Eval:  3! * 5 + 7 = 37
* Why rs37Eval? 37 Heaven @ http://thirty-seven.org

rs42Eval:  7 * ((3!)! / 5!) = 42
* 42 is the "Answer to Life, the Universe, and Everything"

rsCardinalityEval:  3! / (7 - 5) = 3
* There are 3 numbers in this parking sign.

off-by-one rsStateEval:  5! / 3 + 7 = 48-1
* Arizona was the 48th state admitted to the Union.

off-by-one rs42Eval:  5 * 7 + 3! = 42-1
* 42 is the "Answer to Life, the Universe, and Everything"

off-by-one rs37Eval:  7 * 5 + 3 = 37+1
* Why rs37Eval? 37 Heaven @ http://thirty-seven.org

```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 18 November 2015