This road closed sign is on CA Hwy-209 in San Diego, California.

The road closed sign says...

+---------------------+ | Road Closed | | 1,000 Ft Ahead | | 5 PM - 5 AM | | Weekends & Holidays | | 5 PM - 9 AM | +---------------------+the numbers are: 1,000 5 5 5 9 the math is: 5 / 5 + 5 - sqrt(9) = log(1000) observe... 5 / 5 = 1 1 + 5 = 6 sqrt(9) = 3 6 - 3 = 3 log(1000) = 3 [solve for 'n'] n / n + n - sqrt(9) = log(1000) --- the following was added on 5 October 2008 --- factorial math: (5! / (5! / sqrt(9)!))! / 5!) = log(1000)! more math: log(sqrt((1000 / (5 + 5)))) + 5 = sqrt(9)! rsHwyEval: (1000 / 5) * (5 / 5) + 9 = 209 * This sign was found on CA Hwy-209. rs42Eval: (1000 / 5) / 5 + sqrt(9 - 5) = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsAgeEval: (1000 / 5) / 5 + sqrt(9)! + 5 = 51 * MathBabbler found this math when he was 51 years young. base-2 math: 9 - 5 = (1000 / (5 + 5))_{2}more base-2 math: sqrt(9 - 5) = sqrt(1000 / (5 + 5))_{2}

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 16 October 2007

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