Answered You can hire a professional tutor to get the answer.
QUESTION
If we generate 4-letter strings using the 26 letters of the alphabet (with repeated letters allowed) 1. how many total permutations are there?
If we generate 4-letter strings using the 26 letters of the alphabet (with repeated letters allowed)
1. how many total permutations are there? 2. How many permutations do not have the letter ‘a’ as the second character?
