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Questions  >>  CBSE XI  >>  Math  >>  Sequences and Series
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Q)

If the sum of $n$ terms of an $A.P.$ is $3n^2+5n$ and its $m^{th}$ term is $164$, find the value of $m$.

$\begin{array}{1 1}25 \\ 26 \\ 27 \\ 28 \end{array} $

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