SQL code for fetching first 10 records starting with 50

In many interviews i had been asked questions like this:
Write a code for fetching first 10 records starting with 50.
Now i decided to post it here for me and everyone else who may need it:
(You may run this query in AdventureWorks sample Database )

WITH Persons AS

(

    SELECT FirstName,LastName,

    ROW_NUMBER() OVER (ORDER BY LastName) AS 'RowNumber'

    FROM Person.Contact

)

SELECT FirstName,LastName

FROM Persons

WHERE RowNumber BETWEEN 50 AND 60;