document.write( "Question 977509: find the missing term ?\r
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document.write( "2 9 28 65 126 _______? \n" );
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Algebra.Com's Answer #599063 by anand429(138)![]() ![]() You can put this solution on YOUR website! 217.\r \n" ); document.write( "\n" ); document.write( "Solution \n" ); document.write( "2 = 1 x 2 \n" ); document.write( "9 = 3 x 3 \n" ); document.write( "28 = 7 x 4 \n" ); document.write( "65 = 13 x 5 \n" ); document.write( "126 = 21 x 6\r \n" ); document.write( "\n" ); document.write( "See, the first terms on RHS is of following pattern: \n" ); document.write( "1, 1+2, 1+2+4 , 1+2+4+6 1+2+4+6+8, so next term will be 1+2+4+6+8+10 =31\r \n" ); document.write( "\n" ); document.write( "2nd terms on RHS follow simple progression \n" ); document.write( "2,3,4,5,6....so next term is 7\r \n" ); document.write( "\n" ); document.write( "So Next term in our series = 31 x 7 = 217 \n" ); document.write( " |