Question

Geometric series. 2+6+18+54+162. What's the value of n?

Answer 1

3n...........

Answer 2

am i crct mr Fuzzy

Answer 3

2 times sum n=0 to infinity 3 to the power of n

Answer 4

\[T_{n}=ar^n-1\]

Answer 5

162=2*(3^n-1)
162/2=2/2*(3^n-1)
81=3^n-1
\[3^4=3^n-1\]
4=n-1
n=4+1
=5

Answer 6

hope u understood