English Medium Class 10 - CBSE Question Bank Solutions

Find the sum of all integers between 84 and 719, which are multiples of 5.

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

Find the values of k for which the roots are real and equal in each of the following equation:

kx² + 4x + 1 = 0

Find the values of k for which the roots are real and equal in each of the following equation:

`kx^2-2sqrt5x+4=0`

Find the value of k for which the roots are real and equal in the following equation:

3x2 − 5x + 2k = 0

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

Find the sum of all integers between 100 and 550, which are divisible by 9.

In an A.P., if the first term is 22, the common difference is −4 and the sum to n terms is 64,  find n.

Find the values of k for which the roots are real and equal in each of the following equation:

4x² + kx + 9 = 0

Find the values of k for which the roots are real and equal in each of the following equation:

2kx² - 40x + 25 = 0

Find the values of k for which the roots are real and equal in each of the following equation:

9x² - 24x + k = 0

In an A.P., if the 5th and 12th terms are 30 and 65 respectively, what is the sum of first 20 terms?

Find the values of k for which the roots are real and equal in each of the following equation:

4x² - 3kx + 1 = 0

Find the values of k for which the roots are real and equal in each of the following equation:

x² - 2(5 + 2k)x + 3(7 + 10k) = 0

Find the sum of the first 11 terms of the A.P : 2, 6, 10, 14, ...

Find the values of k for which the roots are real and equal in each of the following equation:

(3k+1)x² + 2(k + 1)x + k = 0

Find the sum of the first 13 terms of the A.P: -6, 0, 6, 12,....

Find the sum of the first 51 terms of the A.P: whose second term is 2 and the fourth term is 8.

Find the sum of the first 40 positive integers divisible by 3

Find the values of k for which the roots are real and equal in each of the following equation:

kx² + kx + 1 = -4x² - x