Question: how many combinations of numbers 1 to 10?
Answer: Assuming you want the numbers grouped in groups of 10 e.g. 1,2,3,4,5,6,7,8,9,10 and then 1,2,3,4,5,6,7,8,10,9 etc. Then you will run out of room in Excel about 30% the way through - By my estimation there are 3,628,800 combinations, but only 1,048,576 rows in Excel (2007).