if the Pth term of an AP is Q and its Qth term is P then show that its (P+Q)th term is zero/
Here is the link for the answer to your query:
https://www.meritnation.com/ask-answer/question/q-and-qth-term-is-p-then-its-p-q-th-term-is-a-0-b-p-q/arithmetic-progressions/1429444
Follow solution 1 of the above given link.
https://www.meritnation.com/ask-answer/question/q-and-qth-term-is-p-then-its-p-q-th-term-is-a-0-b-p-q/arithmetic-progressions/1429444
Follow solution 1 of the above given link.