Suppose a rumor is spread by first one person telling another individual and then the individual telling two other people. Each person in turn tells two other people. Can you consider this an arithmetic or geometric sequence? Explain your answer.

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It would be a geometric sequence.

The sequence would be 1, 2, 4, 8, 16,....

The ratio of n: (n+1) is always 1:2. Therefore it would be a geometric sequence.

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