If the sum of the first 100 terms of an arithmetic progression is `-1` and the sum of the even terms is 1, then the `100^("th")` term of the arithmetic progression is

The sum of the first fifteen terms of an arithmetical progression is 105 and the sum of the next fifteen terms is 780. Find the first three terms of the arithmetical progression,.

If the sum of first 100 terms of an arithmetic progression is -1 and the sum of the even terms lying in first 100 terms is 1, then which of the following statement(s) is (are) correct?

The sum of first 'n' terms of an arithmetic progression is 210 and sum of its first (n-1) terms is 171. If the first term 3, then write the arithmetic progression.

What is the sum of the first 13 terms of an arithmetic progression, if the 5th term is 1 and the 8th term is - 17?

The sum of first 5 terms of an arithmetic progression is 80,third term will be __

The sum of 40 terms of an arithmetic progression is 430 and the sum of 60 terms is 945. Find the 20th term.

The sum of the first three terms of the arithmetic progression is 30 and the sum of the squares of the first term and the second term of the same progression is 116. Find the seventh term of the progression if its fith term is known to be exactly divisible by 14.

The sum of the first three terms of an arithmetic progression is 9 and the sum of their squares is 35. The sum of the first n terms of the series can be

The sum of the first three terms of an arithmetic progression is 9 and the sum of their squares is 35. The sum of the first n terms of the series can be