The common difference of an A.P., the sum of whose n terms is S<sub>n</sub>, is

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

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

What is the sum of the first 11 terms of an arithmetic progression if the 3<sup>rd</sup> term is -1 and the …

The 7<sup>th</sup> and 12<sup>th</sup> term of an arithmetic progression are -15 and 5 respectiv…

After striking the floor, a rubber ball rebounds to 4/5<sup>th</sup> of the height from which it has fallen.…

If $$\frac{1}{{x + 2}},$$  $$\frac{1}{{x + 3}},$$  $$\frac{1}{{x + 5}}$$   are in A.P. then x…

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