Question

Find the first and the last term of AP if its middle term is 8

Answer 1

if middle term of Ap is 8
8=n/2
n=8×2
n=16
D=
i am writing rest leter.
so , A.n=a+(n-1).d
= a+(16-1)d
=a+15d
or,a=-15

Answer 2

middle term=n/2
8=n/2
16=n

a.n = a+(n-1)d
= a+(16-1)d
= a+15d

a=a.n-15d