An arithmetic sequence is a sequence where each term increases by a constant difference d. The nth term is found by adding the common difference (n−1) times to the first term.
Find the 10th term of the sequence 3, 7, 11, 15, ...
a₁ = 3, d = 4. a₁₀ = 3 + (10−1) × 4 = 3 + 36 = 39
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