Previous year questions | Class 10 math (Hindi) | Khan Academy

The ratio of the sums of first m terms and first n terms of an arithmetic progression is m^2: n^2 Show that the ratio of its mth and nth terms is (2m-1) : (2n-1)

The ratio of the sums of first m terms and first n terms of an arithmetic progression is m^2: n^2 Show that the ratio of its mth and nth terms is (2m-1) : (2n-1)

The first and the last terms of an arithmetic progression are 8 and 350 respectively. If its common difference is 9, how many terms are there and what is their sum?

The first and the last terms of an arithmetic progression are 8 and 350 respectively. If its common difference is 9, how many terms are there and what is their sum?

The digits of a positive number of three digits are in arithmetic progression and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number.

The digits of a positive number of three digits are in arithmetic progression and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number.