Question

Find the S20 of this series
2, 6, 18,..

Answer 1

The first term in our sequence = 2

The common ratio = 6 / 2 = 3

n = the term we want to find.

2 * (3)^(n - 1)

2 * (3)^(20 - 1)

2 * (3)^(19)

2 * 1162261467

2324522934 is the 20th number in the series.

Answer 2

Multiply it by 3 until you get it