1.
If Sn denotes the sum of the first r terms of an A.P. Then, S3n : (S2n – Sn) is

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

3.
If the first term of an A.P. is a and nth term is b, then its common difference is

4.
If $$\frac{{5 + 9 + 13 + ...\,{\text{to}}\,n\,{\text{terms}}}}{{7 + 9 + 11 + ...\,{\text{to}}\,\left( {n + 1} \right)\,{\text{terms}}}}$$       $$ = \frac{{17}}{{16}},$$  then n = ?

5.
The common difference of the A.P. is $$\frac{1}{{2q}},$$ $$\frac{{1 - 2q}}{{2q}},$$  $$\frac{{1 - 4q}}{{2q}},$$  . . . . is

Read More Section(Progressions)

Each Section contains maximum 70 questions. To get more questions visit other sections.