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What will be the next term in the arithmetic progression (31,27,23,19,\ldots)?

Answer and explanation

Correct answer: 15

The difference between consecutive terms is constant: \(27-31=-4\), \(23-27=-4\), and \(19-23=-4\). Hence, the common difference is \(d=-4\). Therefore, the next term is \(19+(-4)=15\). Choosing 16 would give a difference of \(-3\), which does not match the common difference of the progression. Exam tip: To find the next term, add the common difference to the last term.

Related tags

Arithmetic ProgressionCommon DifferenceNext TermClass 10 MathematicsSequenceIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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