Select transactions where the Amount is greater than $1000 AND TransactionDate is within the last 10 days AND AccountID is not 501.

To answer this question, you would need to use a SQL query. Here's how you can do it:

1. First, calculate the date 10 days ago from the current date. In SQL, you can use the DATE_SUB function to subtract days from a date. Here's how you can get the date 10 days ago:

   DATE_SUB(CURDATE(), INTERVAL 10 DAY)
   

2. Next, write a SQL query to select transactions where the Amount is greater than $1000, the TransactionDate is within the last 10 days, and the AccountID is not 501. Here's how you can do it:

   SELECT *
   FROM Transactions
   WHERE Amount > 1000
   AND TransactionDate >= DATE_SUB(CURDATE(), INTERVAL 10 DAY)
   AND AccountID != 501
   

This query will return all columns (*) from the Transactions table where the Amount is greater than $1000, the TransactionDate is within the last 10 days, and the AccountID is not 501.