The first and last terms of an A.P. are 1 and 11. If the sum of its terms is 36, then the number of terms will be

The 3<sup>rd</sup> and 7<sup>th</sup> term of an arithmetic progression are -9 and 11 respective…

Sum of n terms of the series $$\sqrt 2 $$  $$ + $$  $$\sqrt 8 $$  $$ + $$  $$\sqrt {…

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

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

If a rubber ball consistently bounces back $$\frac{{2}}{{3}}$$ of the height from which it is dropped, what fraction of …

What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?

If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be