This road sign is on the Hawaiian Island of Kauai.

The road sign says...

+-----------------+ | Poipu 13 mi | | 21 km | | Waimea 21 mi | | 34 km | +-----------------+the numbers are: 13 21 21 34 the math is: sqrt(21 * (34 - 13)) = 21## Update::2010.01.29

This BARS was selected to be one of the BARS of the Week for week #3 of the spring 2010 semester.

the numbers are: 13 21 21 34 rsStateEval: 34 % 13 + 21 + 21 = 50 * Hawaii was the 50th state admitted to the Union. note: % is the modulus (or remainder) operator and n % m evaluates to the reminder of n / m e.g. 5 % 3 = 2; 21 % 7 = 0; 42 % 11 = 9 note: 13 is a prime number; therefore, it is in the domain (i.e. it can be used as input to) the multiply_digits(n) function. rsAgeEval: 34 + 21 - (21 % multiply_digits(13)!) = 52 * MathBabbler was 52 years young when he found this equation. * This is also an off-by-one rsAgeEval because RoadHacker was 51 years young when he found this road sign. observe... multiply_digits(13) = 1 * 3 = 3 3! = 6; 21 % 6 = 3

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

**Created:** 06 August 2008

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