This road sign was found in Tucson, Arizona.

The road sign says...

+--------------------+ | Catalina 8 | | Jct. SR 79 12 | | Jct. US 70 90 | +--------------------+the numbers are: 8 12 70 79 90 the math is: 90 / (79 - 70) = avg(8, 12) observe... 79 - 70 = 9 90 / 9 = 10 avg(8, 12) = (8 + 12) / 2 = 20 / 2 = 10## Update::2009.02.22

When MathBabbler decided his Pi Day 2009 roadtrip would be to Nogales, Arizona, via Casa Grande and Tucson, he created a collection of BARS that he already had from Tucson. This BARS was one of the seven BARS added to the Tucson collection so he looked from some more math and found the following.

the numbers are: 8 12 70 79 90 the math is: 12 * 8 - 90 = (sqrt(79 - 70))! rsAgeEval: 90 - summation(8, 12) + (79 - 70) = 49 * RoadHacker was 49 years young when he found this road sign. observe: summation(8, 12) = 8 + 9 + 10 + 11 + 12 = 50 number system math: sqrt(12 - 8) = (90 / (79 - 70))_{2}

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

**Created:** 23 May 2007

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