- #1
ashkash
- 32
- 0
Here is the problem:
A sequence of letters of the form abcba is an example of a palindrome of five letters.
a. If a letter may appear more than twice, how many palindromes of five letters are there? of six letters?
b. Repeat part a under the condition that no letter appears more than twice.
I do not know how to go about doing this problem. Any help would be appreciated. thanks.
A sequence of letters of the form abcba is an example of a palindrome of five letters.
a. If a letter may appear more than twice, how many palindromes of five letters are there? of six letters?
b. Repeat part a under the condition that no letter appears more than twice.
I do not know how to go about doing this problem. Any help would be appreciated. thanks.