Find 2 × 5 × 8 + 4 × 7 × 10 + 6 × 9 × 12 + …… upto n terms. - Vidyadip

Question

Find 2 × 5 × 8 + 4 × 7 × 10 + 6 × 9 × 12 + …… upto n terms.

✓

Answer

Get the step-by-step solution for this question inside the Vidyadip app.

Get the answer in the app

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Solve the Following Question.(3 Marks)" from Sequences and Series→Sequences and Series — all question types→Maths STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Evaluate the following limits:
$\lim _{x \rightarrow \infty}\left[\frac{(2 x+1)^2(7 x-3)^3}{(5 x+2)^5}\right]$

If $A=\left[\begin{array}{lll}1 & 2 & 3 \\ 2 & 4 & 6 \\ 1 & 2 & 3\end{array}\right], B=\left[\begin{array}{ccc}1 & -1 & 1 \\ -3 & 2 & -1 \\ -2 & 1 & 0\end{array}\right]$, show that $A B$ and $B A$ are both singular

matrices.

A survey of 500 television viewers produced the following information; 285 watch football, 195 watch hockey, 115 watch basketball, 45 watch football and basketball, 70 watch football and hockey, 50 watch hockey and football, 50 do not watch any of the three games. How many watch all the three games? How many watch exactly one of the three game?

Evaluate the following limit:
$\lim\limits_{\text{n}\rightarrow\infty}\frac{1^2+2^2+\ \dots+\text{n}^2}{\text{n}^4}$

Which term of the sequence $12+8\text{i},\ 6\text{i},\ 10+4\text{i},\ ...$ is (a) real (b) purely imaginary?

A line perpendicular to segment joining $A(1, 0)$ and $B(2, 3)$ divides it internally in the ratio $1 : 2.$ Find the equation of the line

For any two sets A and B, show that the following statements are equevalent:
$\text{A}-\text{B}=\phi.$

Find the point on $y-$axis which is equidistant from the points $(3, 1, 2)$ and $(5, 5, 2).$

In an examination, a question paper consists of 12 questions divided into two parts i.e. Part I and Part II, containing 5 and 7 questions, respectively. A student is required to attempt 8 questions in all, selecting at least 3 from each part. In how many ways can a student select the questions?

Discuss the continuity of the following functions at the points indicated against them.$\begin{aligned} f(x) & =\frac{4^x-2^{x+1}+1}{1-\cos 2 x} , \text { for } x \neq 0 \\ &= \frac{(\log 2)^2}{2} , \text { for } x=0, \text { at } x=0 .\end{aligned}$