document.write( "Question 1173334: from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number
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document.write( "How many four-digit even numbers can be formed? \n" );
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Algebra.Com's Answer #798543 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number \n" ); document.write( "How many four-digit even numbers can be formed? \n" ); document.write( "~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "From the context, I assume that repeating of digits is NOT allowed.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Any of 4 even digits as an \"ones\" digit.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Any of 8 remaining digits as a \"tens\" digit.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Any of 7 remaining digits as a \"hundred\" digit.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Any of 6 remaining digits as a \"thousand\" digit.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "In all, there are 4*8*7*6 = 1344 possible combinations. ANSWER\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |