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A palindrome is a number which reads the same forward as backward. How many five-digit palindromes can be made from the digits 1, 2, 3, 4, and 9? (Each digit may be used more than once.)

 Mar 13, 2022
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It has to be in the form ABCBA. There are 5 choices for A, 5 for B, and 5 for C, making a total of \(\color{brown}\boxed{125}\) choices.

 Mar 13, 2022

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