Join the USAMO Guide Discord Server. Regular updates are posted there!

Let me Join!
Dismiss

Problem 13 (2019 AMC 8)

AMC 8Normal

From module Arithmetic and Number Theory Basics

Problem

A palindrome is a number that has the same value when read from left to right or from right to left. (For example, 1232112321 is a palindrome). Let NN be the least three-digit integer which is not a palindrome but which is the sum of three distinct two-digit palindromes. What is the sum of the digits of NN?

Select an answer

Show me the solution

← Back to all problems