MathDB

2004 General, part 1 #6

Source:

March 8, 2024

number theory

Problem Statement

Find the ordered quadruple of digits

(A,B,C,D)

with

A > B > C > D

, such that \begin{tabular}{ccccc} & A & B & C & D \\ - & D & C & B & A \\ \hline = & B & D & A & C \\ \end{tabular}