[" 24.The eum of "(p+q)^((b))" and "(p-q)^(b)" termas of an "],[AP" is equal to "]

The sum of (p+q)^(th)" and "(p-q)^(th) terms of an AP is equal to

In the p^(th) term of an A.P. is q and q^(th) term is p, prove that the n^(th) term is equal to p+q-n.

In an AP,S_(p)=q,S_(q)=p. Then S_(p+q) is equal to :

If a, b and c are respectively the p^(th) , q^(th) and r^(th) terms of an A.P., then |(a" "p" "1),(b" "q" "1),(c" "r" "1)|=

If the sum of first p terms of an A.P is equal to the sum of the first q terms , then find the first (p+q) terms .

The p^(t h),q^(t h) and r^(t h) terms of an A.P. are a, b, c, respectively. Show that (q-r)a+(r-p)b+(p-q)c=0 .

If the sum of p terms of an A.P is equal to sum of q terms (p != q) then the sum of (p + q) terms is