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Identify the sequence as arithmetic, geometric, or neither. Explain your answer.
1.6, 0.8, 0.4, 0.2, . . .
The given sequence is geometric.
A sequence is defined as arithmetic if there is a common difference between successive terms, and it is defined as geometric if there is a common ratio between successive terms.
In this sequence, each term is obtained by multiplying the previous term by 0.5. That is, the common ratio between successive terms is 0.5. Therefore, the given sequence is geometric.