document.write( "Question 891699: 1,3,6,10.15, ... , n? \n" ); document.write( "

Algebra.Com's Answer #539976 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
n-----1dif----2dif-----3dif---4difference
\n" ); document.write( "1 2 1 0 0
\n" ); document.write( "3 3 1 0 0
\n" ); document.write( "6 4 1 0
\n" ); document.write( "10 5 1
\n" ); document.write( "15 6
\n" ); document.write( "21
\n" ); document.write( "The sixth term could be 21
\n" ); document.write( " \n" ); document.write( "

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