Type of Sequence Arithmetic sequence. Common Difference: 1.3
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When a sequence is arithmetic, the difference between two consecutive terms is constant. By examining our sequence we can see that this is the case.
0.2 + 1.3 ⟶ 1.5 + 1.3 ⟶ 2.8 + 1.3 ⟶ 4.1 + 1.3 ⟶ ...
Therefore, the sequence is an arithmetic sequence with common difference 1.3.