Answer: -6
Step-by-step explanation: i had this too
The third one should be your answer
Answer:
The number of palindromes is
when n is even and
when n is odd
Step-by-step explanation:
From the question we are told that
The length of the string is 
Generally palindrome is evaluated by considering the first part of a string
When the the length of the string is an even number then
it means that the first part of the string is 
Hence the number of bit strings of length n that are palindromes is evaluated as

But When the the length of the string is an odd number then
it means that the first part of the string is 
Hence the number of bit strings of length n that are palindromes is evaluated as

Generally each bit could be either 0 or 1
Hence the number of palindromes is
when n is even and
when n is odd
Answer:
Option C is correct
Step-by-step explanation:
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