The sum of n terms of an A.P. is…

The sum of n terms of an A.P. is 3$\mathbf{n}^{\mathbf{2}}$ + 5n, then 164 is its. A. 24th term B. 27th term C. 26th term D. 25th term Answer: Option…

The sum of first n odd natural numbers in

The sum of first n odd natural numbers in. A. 2n - 1 B. 2n + 1 C. $\mathrm{n}^{2}$ D. $\mathrm{n}^{2}$ -1 Answer: Option C Show Answer Solution(By Apex Team)…

The nth term of an A.P., the sum of whose n.

The nth term of an A.P., the sum of whose n terms is $\mathrm{S}_{\mathrm{n}}$, is A. $S_{n}+S_{n-1}$ B. $S_{n}-S_{n-1}$ C. $S_{n}+S_{n+1}$ D. $S_{n}-S_{n+1}$ Answer: Option B Show Answer Solution(By Apex…

If the first term of an A.P. is 2..

If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is A. 3200 B. 1600 C. 200 D. 2800…