[" If the sum of "n" tems of an A.P.is "...

[" If the sum of "n" tems of an A.P.is "3n^(2)+5n" then which of its terms is "164" ? "],[[" (a) "26" th "," (b) "27" th "," (c) "28" th "," (d) none of these."]]

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