MathDB
AMC 8 2004 Problem 2

Source:

November 28, 2010

Problem Statement

How many different four-digit numbers can be formed by rearranging the four digits in 20042004?
<spanclass=′latex−bold′>(A)</span> 4<spanclass=′latex−bold′>(B)</span> 6<spanclass=′latex−bold′>(C)</span> 16<spanclass=′latex−bold′>(D)</span> 24<spanclass=′latex−bold′>(E)</span> 81<span class='latex-bold'>(A)</span>\ 4\qquad <span class='latex-bold'>(B)</span>\ 6\qquad <span class='latex-bold'>(C)</span>\ 16\qquad <span class='latex-bold'>(D)</span>\ 24\qquad <span class='latex-bold'>(E)</span>\ 81
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