### BARS::Not Quite e -- Off By 0.01

```               387                387         387
---------------------  =  --------  =  -----  =  2.7253
summation(16,23) - 14     156 - 14      142

summation(16,23) = 16+17+18+19+20+21+22+23 = 156
```

`2.7253` rounded to the nearest hundredth is `2.73`, but `2.7253` rounded to the hundredths is `2.72`.

RoadSignMath.com uses the value of `e` rounded to the hundredths (i.e. `2.71`).

The value of `e` evaluates to `2.71828183...`, which is `2.72` when rounded to the nearest hundredth.

Let's get a better approximation of how far from `e` our result is.

```   foo = 2.72535211267605633802816901408
e   = 2.71828182845904523536028747135

foo - e = .00707028421701110266788154273

foo - e rounded to the hundredths gives .00
foo - e rounded to the nearest hundredths gives 0.01

foo is 0.26% greater than e
```

The mathmetical constant `e` is sometimes called either Euler's number or Napier's constant.

Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 19 January 2006

This work is licensed under a Creative Commons License.
##### RoadHacker Nanofoo

Arizona had a rainy spring of 2005 and that turned AZ Hwy-387 into a six mile scenic drive.

RoadHacker:: Arizona Highway 387 During Spring 2005 [opens new window]