Question

the 17th term of AP is 5 more than its 8 term if the 11 term of AP is 43 find the nth term

Answer 1

a17 = 5 + a8 ......[ Given.]

a + 16d = 5 + a + 7d

16d - 7d = 5

9d = 5

d = 5/9

and a11 = 43

a + 10d = 43

a = 43 - 50/9

a = 387-50/9

a = 337/9

an = a + (n-1)d

= 337/9

Answer 2

we need the last term to find it

I hope this will help you