In an A.P. if `m^(t h)`term is n and the `n^(t h)`term is m, where `m!=n`, find the pth term.

In an A.P., if mth term is n and nth term is m , show that its rth term is (m +n -r) .

if m t h term of an A.P. is n\ a n d\ n t h term is m , then write its m+n t h term.

If the m^(t h) term of an A.P. is 1/n and the n^(t h) terms is 1/m , show that the sum of m n terms is 1/2(m n+1)dot

If in an A.P., the pth term is q\ a n d\ (p+q)^(t h) term is zero then the q^(t h) term is a. -p b. p c. p+q d. p-q

The m^(th) term of an A.P. is n and n^(th) term is m its p^(th) term is

If the m^(th) term of an H.P. is n and the n^(th) term is m, show that its (mn)^(th) term is 1.

The sum of first m terms of an A.P. is 4m^2-m . If its n t h term is 107, find the value of n . Also, find the 21 s t term of this A.P.

If in an A.P. the sum of m terms is equal of n and the sum of n terms is equal to m , then prove that the sum of -(m+n) terms is (m+n) .

If in an A.P. the sum of m terms is equal to n and the sum of n terms is equal to m then prove that the sum of (m+n) terms is -(m+n)