sum of lucky numbers divisible by 2002 - Chile 2002 L2 P1
Source:
September 1, 2022
chilean NMOnumber theory
Problem Statement
A Metro ticket, which has six digits, is considered a "lucky number" if its six digits are different and their first three digits add up to the same as the last three (A number such as is "lucky number"). Show that the sum of all the "lucky numbers" is divisible by .