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If (a_n=4n+7) and (c_n=a_{n+1}-a_n), what is the common difference of the sequence (c_n)?

Answer and explanation

Correct answer: (0)

Here (c_n=4) for every (n), so its common difference is (0). In exams, treat the sequence of differences as a separate sequence.

Related tags

ApDifference SequenceConstant SequenceIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics

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