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Find the formula for the geometric sequence 1, 5, 25, 125,...OA4, = 5-1OB. 0,= 5.50-1OC. a, = (-2)"-1D. 0,= -2"-1Reset Selection

Find The Formula For The Geometric Sequence 1 5 25 125OA4 51OB 0 5501OC A 21D 0 21Reset Selection class=

Answer :

Given: geometric series 1 , 5, 25 , 125,.................

Find: formula for the geometric series

Explanation: the general formula for the series is

[tex]\begin{gathered} ar^{n-1} \\ 1.5^{n-1} \\ 5^{n-1} \end{gathered}[/tex]

Final answer:

[tex]a_n=5^{n-1}[/tex]

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