200, 519, 442, 212, 201, ?

What is the last number?

Not recognizing a pattern in the series, I submit an answer for where a pattern, of a sorts, does exist:

The last number is 500.

200 < 519 > 442   : 2, 4, 6 (ascending even numbers)*  
212 > 201 < 500   : 5, 3, 1 (descending odd numbers)**

*
200 = CC (2 digits); 519 = DXIX (4 digits); 442 = CDXLII (6 digits)

**
212 = CCXII (5 digits); 201 = CCI (3 digits); 500 = D (1 digit) 

Posted by Dej Mar on 2015-01-02 10:42:23