A palindrome is a word or a number that reads the same forward and backward. For example, 2442 and 111 are palindromes. If 5-digit palindromes are formed using one or more of the digits 1, 2, 3, 4, and 5, how many palindromes are possible? Choose the correct answer.
A) 25	B) 75	C) 125	D) 225	E) 625
There are 5 choices for each of the first three digits.   The number of possible palindromes is 5^3=125.   The answer is 125.
<result>C</result>
A palindrome is a word or a number that reads the same forward and backward. For example, 2442 and 111 are palindromes. If 5-digit palindromes are formed using one or more of the digits 1, 2, 3, 4, and 5, how many palindromes are possible?