These road signs were found on westbound I-10 in Phoenix, Arizona.

The road signs say...

+---------------------+ +--------------+ +-----------+ | HOV 2+ Only | | Exits 143A-B | | Exit 143C | | 6am to 9am | | I-17 | | 19th Ave | | 3pm to 7pm Mon-Fri | | Flagstaff | | Grand Ave | +---------------------+ | 1 1/4 Miles | | 1 Mile | +--------------+ +-----------+ the numbers are: 6 9 3 7 2 143 (1 1/4) 143 19 1 the math is: sqrt(sqrt(143 + 1) * sqrt(143 + (3 - 2))) - ((19 - (6 + 9)) * (1 1/4)) = 7 [exercise] find simplier math

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

**Created:** 24 March 2007

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