This road sign is on southbound US Hwy-95 in Arizona.

The road sign says...

+----------------+ | Yuma 10 | | Somerton 21 | | Mexico 31 | +----------------+the numbers are: 10 21 31 the math is: 10 + 21 = 31 [solve for 'n'] 10 + n = 31The following road sign evaluations were added on 28 November 2008 as a result of this BARS being used as one of the BARS of the Week for week 15 of the fall 2008 semester.

rs42Eval: 21 + 31 - 10 = 42 * 42 is the "Answer to Life, the Universe, and Everything" [solve for 'n'] 21 + 31 - n = 42 rsAgeEval: 21 + 31 - 10_{base-2}= 50 * RoadHacker found this sign when he was 50 years young. rsAgeEval: 21 + 31 - log(10) = 51 * MathBabbler was 51 years young when he inserted this equation. [exercise] log(10) = ______## Update::2009.09.04

This BARS was selected to be one of the BARS of the Week for week #3 of the fall 2009 semester.

the numbers are: 10 21 31 more math: 31 % 21 = 10 rsAgeEval: log(10) * (21 + 31) = 52 * MathBabbler was 52 years young when he found this equation.

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

**Created:** 17 December 2007

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