document.write( "Question 1044680: find the sequence and the series of {1+2+3+4...n} \n" ); document.write( "
Algebra.Com's Answer #660015 by josgarithmetic(39618)![]() ![]() ![]() You can put this solution on YOUR website! Pattern is plus-one; and for the series, either lookup the formula or derive the formula.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " |