Choose the 1st thing as a letter in 26 ways Choose the 2nd thing as another letter in 25 ways Choose the 3rd thing as a digit in 10 ways Choose the 4th thing as another digit in 9 ways Choose the 5th thing as still another digit in 8 ways Choose the 6th thing as still another digit in 7 ways Answer: (26)(25)(10)(9)(8)(7) Edwin