Question

8.
(d) m+n-
(a) m + n +r
The mth term of an A. P. is n and nth term is m. The rth term of it is
(b) n + m - 2
(c) m + n + r/2​

Answer 1

Answer:

Step-by-step explanation:

Using the formula for mth term, we get

a  m =a  1 +(m−1)d

Hence  a  1 +(m−1)d=n...(i)

Similarly  a  1 ​+(n−1)d=m (i)

Subtracting (ii) from (i)

d(m−1−n+1)=n−m

d(m−n)=n−m

d=−1.