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# Three Terms Geometric

ALGEBR-EKLVMP

Find the formula for the geometric sequence with the first three terms equal to $54, 18, 6$.

A

$a_{n}=54\left( \frac{1}{3} \right)^{n-1}$

B

$a_{n}=54\left( 3 \right)^{n-1}$

C

$a_{n}=54\left( \frac{1}{3} \right)^{n}$

D

$a_{n}=18\left( \frac{1}{3} \right)^{n-1}$

E

none of the above