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

The road signs say...

+----------------------------+ +---------+ +-----------+ +-----------+ | Exit Left 147C | | 10 East | | Exit 147B | | Exit 147A | | HOV 202 East HOV 10 East | | Tucson | | 51 North | | 202 East | | 6am - 9am | +---------+ | 1/4 Mile | | 1/4 Mile | | 3pm - 7pm | +-----------+ | Exit Only | +----------------------------+ +-----------+ the numbers are: 147 202 10 6 9 3 7 10 51 1/4 147 147 202 1/4 the math is: n = (1/4) * (51 - (147 - (((202 + 202) * (1/4)) - (147 / 147)))) d = sqrt(log(10) + log(10) + 6 - 3)) (n + d) / (9 - 7) = Phi ...or... (((1/4) * (51 - (147 - (((202 + 202) * (1/4)) - (147 / 147))))) + sqrt(log(10) + log(10) + 6 - 3)) / (9 - 7) = Phi observe... Phi = 1.61803399 or (1 + sqrt(5)) / 2 log(10) = 1

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

**Created:** 24 March 2007

This work is licensed under a Creative Commons License.