The sequence −10, −6, −2, 2, ... is ______.

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The sequence −10, −6, −2, 2, ... is an A.P. Reason d = 4. Explanation: The given sequence is –10, –6, –2, 2, ... Here, First term (a) = a1 = –1 Second term = a2 = –6 Third term = a3 = –2 Common difference (d) = a2 – a1 = –6 – (–10) = 4 a3 – a2 = –2 – (–6) = 4 Since, a2 – a1 = a3 – a2 Thus, the given sequence is an A.P.

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