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Which sequence is an arithmetic progression with (d=-4)?

Answer and explanation

Correct answer: (18, 14, 10, 6, …)

In an arithmetic progression, the difference between every pair of consecutive terms is constant. In option B, 14−18=−4, 10−14=−4, and 6−10=−4, so its common difference is d=−4. Option A has a difference of +4, while the differences in C and D are not constant. An easy exam check is to subtract each term from the term immediately before it.

Related tags

Arithmetic ProgressionCommon DifferenceNegative DifferenceSequence IdentificationIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions Ap

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