Question

wht's the nth term of this geometric sequence 1, 3, 9, 27, 81?

Answer 1

Answer:

an = 3^(n-1)

Step-by-step explanation:

Given geometric sequence is 1, 3, 9, 27, 81, ...

Here first term is 1 and common ratio is 3.

nth term of GP is ar^(n-1).

So, an = 3^(n-1)