BARS::Next Service 47 Miles; 1 Mile From Joshua Tree National Park

This road sign is one mile from Joshua Tree National Park in California.

The road sign says...

   +---------------------------+
   | Joshua Tree Natl Park   1 |
   | Cottonwood Springs      8 |
   | Twentynine Palms       47 |
   +---------------------------+
   | Next Service 47 Miles     |
   +---------------------------+
   the numbers are:  1  8  47  47

   the math is:  47 / 47 + 1 = cuberoot(8)

   rsAgeEval:  (47 + 1)! / 47! + cuberoot(8) = 50
   * RoadHacker was 50 years young when he found this road sign.

   rsCardinalityEval:  47 / 47 + cuberoot(8) + 1 = 4
   * There are four numbers in these signs.

   off-by-one rs42Eval:  47 - 47 % 8 + 1 = 42-1
   * 42 is the "Answer to Life, the Universe, and Everything"

   BARS functions for prime numbers...
   * mult_digits(n) = product of the digits of n
     domain:  n must be a prime number
   * sum_digits(n) = sum the digits of n
     domain:  n must be a prime number
   * 47 is prime; mult_digits(47) = 4*7 = 28
   * 47 is prime; sum_digits(47) = 4+7 = 11

   BARSfunc rsAgeEval:  mult_digits(47)+mult_digits(47)+cuberoot(8)*1 = 58
   * MathBabbler was 58 years young when he found this equation.

   BARSfunc rsAgeEval:  sum_digits(47 - 8 * 1 + 47 = 50
   * RoadHacker was 50 years young when he found this road sign.

   BARSfunc rs37Eval:  47 - sum_digits(47) + cuberoot(8) - 1 = 37
   * Why rs37Eval? 37 Heaven @ http://thirty-seven.org

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 15 February 2016

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