The nth term of the sequence 3, 9, 27, 81…..is
- 3 x 3n-2
-
3 x 3n-1
- 3 x 3n+2
- 3 x 3n+1
The correct answer is: 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 .