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If each next term of a sequence is (7) more than the previous term, what is its common difference?

Answer and explanation

Correct answer: (7)

The common difference of an arithmetic progression is defined as the difference between a term and the term immediately before it: d=a₂−a₁. Here every new term is obtained by adding 7, so a₂−a₁=7 and the same calculation holds for every consecutive pair. Therefore d=7, making option C correct. Zero would mean no change, and −7 would describe a decreasing sequence.

Related tags

Arithmetic-ProgressionCommon-DifferenceClass10SequenceIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions Ap

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