The common difference of the A.P. is $$\frac{1}{{2q}},$$ $$\frac{{1 - 2q}}{{2q}},$$  $$\frac{{1 - 4q}}{{2q}},$$…

15<sup>th</sup> term of A.P., x - 7, x - 2, x + 3, ........ is

What is the sum of the following series? -64, -66, -68, ......, -100

In an A.P., if d = -4, n = 7, a<sub>n</sub> = 4, then a is

Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = S<sub&g…

If 7<sup>th</sup> and 13<sup>th</sup> terms of an A.P. be 34 and 64 respectively, then its 18&lt…

Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The di…

The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.