Question

Find the 60th term of the following arithmetic sequence.
8, 17, 26, 35, ..
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Answer 1

539

Explanation:

The n th term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

Where a₁ is the first term and d the common difference

Here a₁ = 8 and d = 17 - 8 = 26 - 17 = 9, thus

`a_(60)` = 8 + (9 × 59) = 8 + 531 = 539