Question

find the first term and the common difference of the AP 20, 17,14,11,,,,,,,,
who give correct answer I will make them brain a list
but give correct answer​

Answer 1

Answer:

AP is 20, 17, 14, 11

We know that common difference

d=T(2) - T(1)

Hence d = 17-20 = -3

We also know that T(n) = a+(n-1)d

Therefore T(35) =20 +(35-1)*-3

=20 +(34* -3) =20+(-102)=-82