document.write( "Question 771168: 10 45 120 210....What is next number of this series ? \n" ); document.write( "
Algebra.Com's Answer #470013 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "Start with 10\r\n" ); document.write( "Multiply 10 by 9, get 90, divide by 2, get 45.\r\n" ); document.write( "Multiply 45 by 8, get 360, divide by 3, get 120.\r\n" ); document.write( "Multiply 120 by 7, get 840, divide by 4, get 210.\r\n" ); document.write( "Multiply 210 by 6, get 1260, divide by 5, get 252. <--- answer\r\n" ); document.write( "\r\n" ); document.write( "Answer: 252\r\n" ); document.write( "\r\n" ); document.write( "Or you can do it this way with combinations of 10\r\n" ); document.write( "things taken 1,2,3,4,5 at a time.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " C(10,1) = 10\r\n" ); document.write( " C(10,2) = 45\r\n" ); document.write( " C(10,3) = 120\r\n" ); document.write( " C(10,4) = 210\r\n" ); document.write( " C(10,5) = 252 <--answer\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |