Home
Class 11
MATHS
In an A.P., if common difference is 2, s...

In an A.P., if common difference is 2, sum to n terms is 49, 7 th term is 13, then n=

A

0

B

5

C

7

D

13

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

If 100 times the 100th of an A.P. with non-zero common difference equals the 50 times its 50th term, then the 150th term of this A.P. is :

Find the common difference of an AP whose first term is 4, last term is 49 and sum of all terms 265.

The sum of the n terms of an AP is 2n^(2)+5n and its common difference is 6, then its first term is

If the arithmetic progression whose common difference is nonzero the sum of first 3n terms is equal to the sum of next n terms. Then, find the ratio of the sum of the 2n terms to the sum of next 2n terms.

The first and the last terms of an A.P are 17 and 350 respectively. If the common difference is 9, how many terms are there and what is their sum ?

The first and the last term of an A.P are 17 and 350 respectively. If the common difference is 9, how many terms are there and what is their sum ? OR Find the sum of first 51 terms of an A.P whose 2nd term and 3rd term aer 14 and 18 respectively.

Find the sum to 'n' terms if n^(th) term is given by n^(2)+2^(n)

In a sequence of 21 terms the first 11 terms are in A.P. with common difference 2. and the last 11 terms are in G.P. with common ratio 2. If the middle tem of the A.P. is equal to the middle term of the G.P., then the middle term of the entire sequence is