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.

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

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

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 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

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 first 9 terms of an arithmetic sequence is 45 and the sum of first 18 terms is 171. What is its 5^(th) term?

Suppose the sum of the first m teams of a arithmetic progression is n and the sum of its first n terms is m, where mnen. Then the dum of the first (m + n) terms of the arithmetic progression is

Sum of first n terms of an arithmetic sequence is 8n^2 +5n. Find the sum of first 20 terms.

The sum of first 9 terms of an arithmetic sequence is 45 and the sum of first 18 terms is 171. Find its 14^(th) term.