BARS::Off-By-One Road Signs on I-10 East in Arizona

RoadHacker saw two off-by-one road signs while driving east on I-10 in Arizona. RoadHacker did not get pictures, but Tyler was riding shotgun he jotted down the information contained in the road signs.

The first off-by-one road sign says...

   +---------+
   | Exit 31 |
   |  US 60  |
   |  2 Mile |
   +---------+
   the numbers are:  31  60  2

   the off-by-one math is:  60 / 2 = 31 - 1

The second off-by-one road sign says...

   +-----------------+
   | Rest Area     5 |
   | Tonopah      12 |
   | Phoenix      64 |
   +-----------------+
   the numbers are:  5  12  64

   the off-by-one math is:  12 - 5 = sqrt(64) - 1

The two off-by-one road signs can be set equal to one another.

   the numbers are:  31  60  2  5  12  64

   the math is:  31 - (60 / 2) = sqrt(64) + 5 - 12

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 17 December 2007

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