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{{ printedBook.courseTrack.name }} {{ printedBook.name }} Terms are the numbers of a sequence. For example, the numbers $4$ and $7.5$ are terms in the set $R$ (the real numbers). In the sequence $a_{1},a_{2},…,a_{i},…,a_{n}$ the term $a_{n}$ can represent an arbitrary term in the sequence, where $n$ gives its position. Alternatively, if the sequence is finite, $a_{n}$ can represent the last term of the sequence, and the index $n$ gives the number of terms in the sequence.