Determine whether the statement is true or false.
1. A sequence is a function. [8.1]
2. An infinite geometric series with r = -1 has a limit. [8.3]
3. Permutations involve order and arrangements of objects. [8.5]
4. The total number of subsets of a set with n elements is n2. [8.7]
5. Find the first 4 terms, a11, and a23:

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