### BARS::Two Road Signs Along Eastbound I-8 in California

While driving home from California on I-8, RoadHacker saw two road signs that were BARS, but he couldn't get a picture of them. He hopes to get a picture of them someday.

The first road sign said the following...

```   +---------------------+
| Winterhaven      31 |
| Yuma             33 |
+---------------------+
```
```   the numbers are:  31  33

rsHwyEval:  sqrt(31 + 33) = 8
* This road sign is on eastbound I-8.

rsHwyEval:  33 - 31 = cuberoot(8)
* This road sign is on eastbound I-8.

rs42Eval:  (318 + 338)8 = 42
* 42 is the "Answer to Life, the Universe, and Everything"
* Base-8 was used because this road sign was found on I-8.
```

The second road sign said the following...

```   +---------------------+
| Winterhaven      26 |
| Yuma             28 |
+---------------------+
```
```   the numbers are:  26  28

rsHwyEval:  28 - 26 = cuberoot(8)
* This road sign is on eastbound I-8.

rsAgeEval:  26 + 28 = 54
* RoadHacker was 54 years young when he saw this road sign.

BARSfunc rsStateEval:  reverse_digits(28 - spf(26)) = 31
* California was the 31st state admitted to the Union.

* spf(n) = the sum of the prime factors of n
domain:  n must be a composite number
* spf(26) = 2+13 = 15

* reverse_digits(n) = the digits of n reversed
domain:  n must be a prime number
* reverse_digits(28 - 15) = reverse_digits(13) = 31
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 11 July 2011