**Q) ** The ratio of the sum of m and n terms of an A.P. is . Show that the ratio m^{th} and n^{th }term is (2m-1) : (2n-1).

**Ans: **Let:

First term of given A.P. = ,

Common difference = ,

Then, the sums of m and n terms are given by

Then,

**Please do press “Heart” button if you liked the solution.**