Question

In an arithmetic sequence {an}, if a1 = 5 and d = 3, find a72.

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Answer 1

The nth term (an) of the arithmetic sequence is calculated through the equation,
an = a1 + (n - 1)(d)
where an is the nth term, a1 is the first term, n is the number of terms, and d is the common difference. Substituting the known values,
a72 = 5 + (72 - 1)(3)
a72 = 218