Question

lf an A.p. consists of n terms with first term a and n th term l. Show that the sum of the m th term from the begining and the m th term from the end is (a+l)​

Answer 1

Answer:

tm from the first= a+md-d

tm from the last = l-md+d

if we add the above both equation , then it will be a+l.

Now, I think you have got your answer