Question

. If the sum of the first n terms of an A.P is 2n and sum of first 2n terms is n, find the sum of the first 4n terms​

Answer 1

Dear , in the question in which you've typed in , there's a small mistype you made ; that's instead of writing sum of 2n terms as 3n you typed it as n...

I rectified it , so no problem now. Hope you understood the answer.

All the best...☺️