" 1.If the 7w term of an A.P is "40" ,then find "S_(3)

Solve the following questions. (i) Check whether the sequence -3, -1,1,3 ,…. Is an A.P. If it is an A.P., find the common difference. (ii) If the 7th term of an A.P. is 40, then find S_(13) .

Solve the following questions. (i) Check whether the sequence -3, -1,1,3 ,…. Is an A.P. If it is an A.P., find the common difference. (ii) If the 7th term of an A.P. is 40, then find S_(13) .

If the pth term of an A.P. is (2p+3), find the A.P.

If the 7^(th) term of n A.P is 40. Then the sum of its first 13 terms is

Find the 7th term of A.P if a=1 , d=2

Suppose that the first and the 5^(th) terms of an A.P. are-14 and 2 respectively If the sum of the terms of the A.P is 40, find the number of terms in the A.P.

The first, fourth and thirteenth term of an A.P. are in G.P. If the first term of the A.P. is 3, find the A.P.

The sum of the 5 ^(th) and the 7^(th) terms of an A.P. is 52 and then 10^(th) term is 46. Find the A.P..

The sum of the 3rd and 7th terms of an A.P. is 54 and the sum of the 5th and 11th terms is 84. Find the A.P.

The sum of the 3rd and 7th terms of an A.P. is 54 and the sum of the 5th and 11th terms is 84. Find the A.P.