The n<sup>th</sup> term of an A.P., the sum of whose n terms is S<sub>n</sub>, is

For A.P. T<sub>18</sub> - T<sub>8</sub> = ........ ?

If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is

The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is

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

The 4<sup>th</sup> and 7<sup>th</sup> term of an arithmetic progression are 11 and -4 respective…

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?