Find an A.P. of 8 terms whose first term is `1/2` and last term in `17/6`

Find the arithmetic series of n terms whose first term is a and last term is l.

Find the sum of an A.P. of :- 26 terms whose nth term is 2n + 5.

Find the sum of 40 terms of an A.P. whose third term is 1 and 6th term is - 11.

If ‘S’ is the sum of a finite A.P. whose first term is ‘a’ and last term is ‘l’, show that its common difference is equal to (l^2-a^2)/(2S-a-l) .

An AP consists of 50 terms of which 3rd term is 12 and the last term is 106. Find the 29^(th) term.

Find the AP whose third term is 4 times first term and 6 th term is 17.

Prove that the product of first 'n' terms of a G.P., whose first term is ‘a’ and last term is ‘l’ , is (al)^(n/2) .

Find the sum of an A.P. of :- 26 terms whose nth term is (2n + 1)/3 .

Find the second term and nth term of an A.P. whose 6th term is 12 and 8th term is 22.