document.write( "Question 1210199: Find the number of sequences (a_1, a_2, a_3, \dots, a_8) such that:
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document.write( "* a_i \in \{1, 2, 3, 4, 5, 6, 7, 8\} for all 1 \le i \le 8.
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document.write( "* Every number1, 2, 3, 4, 5, 6, 7, 8 appears at least once in the sequence. \n" );
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Algebra.Com's Answer #851555 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! .\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The solution by @CPhill is unjustifiably complicated and fatally incorrect.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "His answer is incorrect.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "See the correct solution in the post by @greenestamps.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |