document.write( "Question 977509: find the missing term ?\r
\n" ); document.write( "\n" ); document.write( "2 9 28 65 126 _______?
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Algebra.Com's Answer #599063 by anand429(138)\"\" \"About 
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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
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