Arts (English Medium) कक्षा ११ - CBSE Question Bank Solutions

The angles of a quadrilateral are in A.P. whose common difference is 10°. Find the angles.

Find the sum of the following arithmetic progression :

50, 46, 42, ... to 10 terms

Find the sum of the following arithmetic progression :

1, 3, 5, 7, ... to 12 terms

Find the sum of the following arithmetic progression :

3, 9/2, 6, 15/2, ... to 25 terms

Find the sum of the following arithmetic progression :

41, 36, 31, ... to 12 terms

Find the sum of the following arithmetic progression :

a + b, a − b, a − 3b, ... to 22 terms

Find the sum of the following arithmetic progression :

 (x − y)², (x² + y²), (x + y)², ... to n terms

Find the sum of the following arithmetic progression :

\[\frac{x - y}{x + y}, \frac{3x - 2y}{x + y}, \frac{5x - 3y}{x + y}\], ... to n terms.

Find the sum of the following serie:

 2 + 5 + 8 + ... + 182

Find the sum of the following serie:

101 + 99 + 97 + ... + 47

Find the sum of the following serie:

(a − b)² + (a² + b²) + (a + b)² + ... + [(a + b)² + 6ab]

Show that the sum of all odd integers between 1 and 1000 which are divisible by 3 is 83667.

Find the sum of all integers between 50 and 500 which are divisible by 7.

Find the sum of all even integers between 101 and 999.