The nth term of the sequence 3, 9, 27, 81…..is
-
A.
3 x 3n-2 -
B.
3 x 3n-1 -
C.
3 x 3n+2 -
D.
3 x 3n+1
Correct Answer: Option B
Explanation
3,9,27,81,…..
r = (frac{9}{8}) = 3
Tn = arn-1
Tn = 3(3)n-1 = (frac{3(3^2)}{3})
There is an explanation video available below.