Question: How many different four-letter codes are there if only the letters A, B, C, D, E, and F can be used and no letter can
How many different four-letter codes are there if only the letters A, B, C, D, E, and F can be used and no letter can be used more than once?
Step by Step Solution
3.37 Rating (172 Votes )
There are 3 Steps involved in it
Since no letter can be repeated there are 6 ... View full answer
Get step-by-step solutions from verified subject matter experts
