Home
Class 11
MATHS
If the sum of the first 2n terms of A.P....

If the sum of the first 2n terms of A.P. 2,5,8,... is equal to the sum of the first n terms of A.P. 57,59,61... , then n is equal to

A

10

B

12

C

11

D

13

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

If the sum of the first 2n terms of the A.P.2,5,8,..., is equal to the sum of the first n terms of A.P.57,59,61,..., then n equals 10 b.12 c.11 d.13

If the sum of the first 2n terms of the A.P.2,5,8,…, is equal to the sum of the first n terms of the A.P.57,59,61,…, then n equals

If the sum of the first 2n terms of the AP 2, 5, 8 ....is equal to the sum of first n terms of the AP 57, 59, 61, ..., then what is the value of n?

If the sum to 2n terms of an Ap 2,5,8,11 , …. is equal to the sum to n terms of an AP 57,59,61,63, …. , then n is equal to

Let S_(1) be the sum of the first n terms of the A.P 8,12,16,... and let S_(2) be the sum of the first n terms of the A.P 17,19,21,... assume n!=0 then S_(1)=S_(2) for

The sum oif the first ten terms of an A.P. is equal to 155, and the sum of the first two terms of a G.P. is 9. Find these progressionsif the first term of the A.P. equals the common ratio of the G.P. and the 1st term of G.P. equals the common difference of A.P.

If the sum of first p terms of an A.P. is equal to the sum of the first q terms, then find the sum of the first (p+q) terms.

The sum of the first n terms of an A.P.is 4n^(2)+2n. Find the nth term of this A.P.

If the n^(th) term of an A.P.is (2n+1), find the sum of first n terms of the A.P.