Question

if the 7thof an A.P is 15 and 13th term is 27, find the nth term.

Answer 1

Answer:

Step-by-step explanation: a7 is equal to 15

Then it can be written as a+6d=15 ...(1)

13rt is 27

A+12d=27....(2)

By equating one and two

You will get d as 2

And a will be 3

Nth term = a+(n-1)d =3+(n-1)2

= 3+2n-2=1+2n this is the answer