Question

If there are A.Ms. between and then common difference will be _________

Answer 1

n+1

b−a

n arithmetic means to be inserted.

So a is first term and b is (n+2)

th

term

Let d be the common difference.

t

n+2

=a+((n+2)−1)d=a+(n+1)d=b

⇒(n+1)d=b−a

⇒d=

n+1

b−a