The third term of an A.P. is `(1)/(5)` and the 5th term is `(1)/(3)`. Show that the sum of 15 terms of the A.P. is 8.

The third term of an AP is 1/5 and the 5th term is 1/3 find the sum of 15 terms of the AP:

If the p^(th) term of an A.P. is (1)/(q) and q^(th) term is (1)/( p) , show that the sum of pq terms is ((pq+1) )/(2) .

IF 8th term of an A.P. is 15, then the sum of 15 terms is

If the 10^(th) term of an A.P. is 1/5 and its 20^(th) term is 1/3 , then the sum of its first 150 terms is:

If the 10^(th) term of an A.P. is 1/5 and its 20^(th) term is 1/3 , then the sum of its first 150 terms is:

If p^(th) term of an A.P is (1)/(q) and q^(th) term of A.P is (1)/(p) then sum of the first pq terms is

If the 8th term of an A.P. is 31 and the 15th term is 16 more than the 11th term, find the A.P.

If 5^(th) term of A.P is (1)/(6) and 6^(th) term of A.P is (1)/(5) then sum of first 30 term is

In an A.P., if 5 ^(th) term is (1)/(7) and 7^(th) term is (1)/(5), then the sum of first 35 terms is

If 10 times the 10th term of an A.P. is equal to 15 times the 15th term, show that 25th term of the A.P. is zero.