Question

Given the sequence 6, 18, 54, 162, ..., which expression would give the fifteenth term?.

Answer 1

first term is 6, second term is 3x6, third it 3^2x6, so 14th is 3^13x6

Answer 2

\[6*3^{14}=28697814 \]

Answer 3

oh sorry 15th term is just 3^(14)x6

Answer 4

\[T_n=6 \times 3^{n-1} \]

Answer 5

foolfor the nth term gets a medal

Answer 6

Tn=ar^n-1

Answer 7

n=position of the term
r=common ratio
a=value of the first term

Answer 8

It is a geometric progression

Answer 9

Answer is 28697814