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.)

Guest Mar 13, 2022

#1**+2 **

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.

BuilderBoi Mar 13, 2022