Question

22.
If S denotes the sum of first n terms of the A.P. a +
(a + d) + (a + 2d) + ....... whose nth term is L, then
the common 'd' of the A.P. is :-
l- a
(1)
(2)
e2-a2
2S-a + €
n
2.
(3)
e² – a2
2S- (a + l)
(4) None of these​

Answer 1

Answer:

3 is the answer for this