### BARS::I-17 North and South and I-10 South and West in Phoenix, Arizona

These highway signs are in the warehouse district of downtown Phoenix, Arizona.

The highway signs say...

```   +------------+ +------------+ +------------+ +------------+
|     To     | |     To     | |     To     | |     To     |
|   South    | |   South    | |   North    | |    West    |
| Interstate | | Interstate | | Interstate | | Interstate |
|   Arizona  | |   Arizona  | |   Arizona  | |   Arizona  |
|     17     | |     10     | |     17     | |     10     |
|    <---    | |    <---    | |    --->    | |    --->    |
+------------+ +------------+ +------------+ +------------+
```
```   the numbers are:  17  10  17  10

the math is:  17 + 10 - 17 = 10

more math:  17 / 17 * 10 = 10

more math:  10 / 10 * 17 = 17

more math:  log(10) * 17 = 17log(10)

number system math:  1716 - 178 + 102 = 10

observe...
1716 = 23
178 = 15
102 = 2
```

This roadsign was submitted to RoadSignMath.com on Monday, 12 December 2005 at 7:20am.

##### Updated::2009.05.11

This BARS was updated because of new functions and rsEvals that have been added to the BARS system.

```   the numbers are:  17  10   17  10

rsAgeEval:  cuberoot(17 + 10) * 17 * log(10) = 51
* MathBabbler was 51 years young when he found this equation

rsAgeEval:  17 + 17 * log(10 * 10) = 51
* MathBabbler was 51 years young when he found this equation

off-by-one rs42Eval:  17 + 17 + 10 - log(10) = 42 + 1
* 42 is the "Answer to Life, the Universe, and Everything"

number system rsPiEval:  (1716 - log(10)) / (17 - 10) = Pi
* 22/7 approximates Pi (3.14) rounded to nearest hundredth

fooish math:  sqrt(17^(log(10) + log(10)) = 17

off-by-one math:  sqrt(17 - log(10)) - cuberoot(17 + 10) = 1
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 31 July 2005
``` + added different number systems on 25 May 2008 ```