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Determine if it is an arithmetic or geometric sequence:72, 48, 24…

Determine if it is an arithmetic or geometric sequence:72, 48, 24…
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Determine if it is an arithmetic or geometric sequence:72, 48, 24…

User Karlyn
by
8.0k points

1 Answer

1 vote

Notice that


\begin{gathered} 48=72-24 \\ 24=48-24=(72-24)-24=72-2*24 \end{gathered}

Therefore, the formula of the sequence is


a_n=72-24(n-1);n\ge1

Thus, it is an arithmetic sequence.

User Shreyas Dave
by
7.9k points
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