An arithmetic progression is written in the following way
The sum of all the terms of the $10^{\text {th }}$ row is_______

Question

An arithmetic progression is written in the following way The sum of all the terms of the $10^{	ext {th }}$ row is_______

Aicharya · Accepted Answer

$\begin{aligned} & 2,5,11,20, \ldots . . \ & 	ext { General term }=\frac{3 n^2-3 n+4}{2} \ & \begin{aligned} & \mathrm{T}_{10}=\frac{3(100)-3(10)+4}{2} \ & \quad= 137 \ & 10 	ext { terms with c.d. }=3 \ & 	ext { sum }=\frac{10}{2}(2(137)+9(3)) \ &=1505\end{aligned}\end{aligned}$

An arithmetic progression is written in the following way The sum of all the terms of the $10^{\text {th }}$…

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