Question 1117410
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It is potentially VERY fine combinatorics problem,


but you presented it in the post fantastically carelessly.


It is not the way to present math problems.


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To see some sample,  look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF =https://www.algebra.com/algebra/homework/Permutations/Arranging-elements-of-sets-containing-undistinguishable-elements.lesson>Arranging elements of sets containing indistinguishable elements</A>, Problem 2 

in this site.