Answer: −151 is the 55th term.
\(a = 11\), \(d = 8 - 11 = -3\). Let \(t_n = -151\).
\[-151 = 11 + (n - 1)(-3)\]\[(n - 1)(-3) = -162\]\[n - 1 = 54,\ n = 55\]1 answer
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· 24 Oct 2026
AI-verified · Oct 2026
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