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If (1, 1+2p, 1+5p, 1+9p) is an arithmetic progression, what is correct about (p)?

Answer and explanation

Correct answer: \(p=0\)

The differences between consecutive terms are \(2p\), \(3p\), and \(4p\). For an arithmetic progression, all these differences must be equal. From \(2p=3p\), we get \(p=0\); then all three differences are \(0\). For \(p=1\) or \(p=2\), the differences are not equal. Exam tip: To test an AP, compare the differences of consecutive terms.

Related tags

Arithmetic ProgressionCommon DifferenceClass 10 MathematicsAp ConditionsAlgebraIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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