" 4.In an A.P."19^(" th ")" term is "52" and "38^(" th ")" term is "128" ,find sum of first "56" terms."

In an A.P. 19th term is 52 and 38th term is 128. Find the sum of first 56 terms.

In an A.P. 19th term is 52 and 38th term is 128 . Find the sum of first 56 terms.

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

In an A.P. 10^(th) term is 46, sum of 5^(th) and 7^(th) term is 52. find the A.P.

The A.P. in which 4^(th) term -15 and 9^(th) term is -30. Find the sum of first 10 numbers.

The 104th term and 4th term of an A.P. are 125 and 0. Find the sum of first 35 terms.

If the 2^(nd) term of an A.P. is 8 and the 5 ^(th) term is 17, find its 19^(th) term.

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 sum of first 8 terms of an Arithmetic progression is 136 and that of first 15 terms is 465, then find the sum of first 25 terms. OR Ths sum of the 5th and 9th terms of an A.P. is 40 and the sum of the 8th and 14th term is 64. Find the sum of the first 20 terms.