Find the sum of first 25 terms of an A.P. whose nth term is $1-4n$

Which term of the AP: 3, 15, 27, 39, . . . will be 132 more than its ${54}^{th}$term?

First the term of an A.P is p and its common difference is q. Find its $10th$ term

For what value of $n$and the $n^{th}$terms of the following two A.Ps the same?$1,7,13,19,$(ii) $69,68,67,$

In $A.P.$, the first term is 8, $n^{th}$ term is 33 and sum to first n terms is 123. Find n and d, the common diffirence.

Which term of the A.P. 3,15,27, 39, ... will be 120 more than its 21st term?

The sum of first six terms of an arithmetic progression is 42. The ratio of its 10th term to its 30th term is 1:3. Calculate the first and the thirteenth term of the A.P.

In an A.P., the first term is 2, the last term is 29 and sum of the terms is155. Find the common difference of the A.P.

If the common difference of an A.P. is 3, then $a_{20}-a_{15}$ is

Find an A.P. whose fourth term is 9 and the sum of its sixth term andthirteenth term is 40.