SOLUTION: A five letter word is formed with the letters a, e, u, r, s, t. How many of them are palindromes?

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Question 1136045: A five letter word is formed with the letters a, e, u, r, s, t. How many of them are palindromes?
Answer by MathLover1(20849) About Me  (Show Source):
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A five letter word is formed with the letters a, e, u, r, s, t. How many of them are palindromes?
There are 6 options for the 1st letter, 6 for the 2nd+letter, and 6 for the middle letter.
There's only 1 way to fill up the last two letters (matching it to the first 2 so it becomes a palindrome).
So, 6+%2A+6+%2A+6+=+216