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Write the first three terms in each of the following sequences defined by the following: (i) an = 2n + 5, (ii) an = (n − 3)/4.
What is the 20th term of the sequence defined by an = (n – 1) (2 – n) (3 + n) ?
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an = n (n + 2)
an = n/(n+1)
an = 2n
an = (–1)n–1 5n+1
