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[" It Show that in an A.P.the sum of the...

[" It Show that in an A.P.the sum of the terms equidistant from the beginning and end is "],[" meta_1 ,a _ 2 ,a _ 3 ,... ,a _ n " be an A.P.with common difference " ^ prime d ^ prime ." Then " "" .INCERT EXEMPLARI "],[" Iterm from the beginning "=a_(k)=a_(1)+(k-1)d" ."]

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