BARS::Clearance Sign on US Hwy-60 at 48th St. in Mesa, Arizona

These road signs were found on westbound US Hwy-60 in Mesa, Arizona.

The road signs say...

   +------------+
   |   48th St  |
   | 16ft - 4in |
   +------------+

   the numbers are:  48  16   4

   the math is:  48 / 4! = sqrt(sqrt(16))

   observe...
      4! = factorial(4) = 4 x 3 x 2 x 1 = 24
      48 / 24 = 2
      sqrt(16) = 4
      sqrt(4) = 2
Zero RSeval

Google.com::Calculator:: 48 / 4! - sqrt(sqrt(16))

About Finding These Road Signs

These road signs were discovered while finishing a roadtrip to Winkelman. Earlier in the day, while heading east on US Hwy-60, we noticed standalone clearance signs that read 16 ft. - 4 in.. Upon returning to town, heading west on US Hwy-60, the road signs used in this BARS was the only one that read 16 ft. - 4. in.; however, the 48th St. sign complicated the math.

   if only two numbers...  sqrt(16) = 4
Off by an Inch

When we initially looked at these road signs for math, we discovered an off-by-one example.

   48 / 16 = 3      [the 3 needs to be 4]

   in this case, we are off by an inch

Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 19 May 2006

Creative Commons License
This work is licensed under a Creative Commons License.