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If (z-4,z+2,z+8,\ldots) is an arithmetic progression, what is (d)?

Answer and explanation

Correct answer: 6

In an arithmetic progression, the common difference is the difference between consecutive terms. Here, \(d=(z+2)-(z-4)=z+2-z+4=6\). Also, \((z+8)-(z+2)=6\), confirming that the common difference is 6. Option 4 is merely a number appearing in a term, not the difference. Exam tip: Find \(d\) first by subtracting the first term from the second term.

Related tags

Arithmetic ProgressionCommon DifferenceAlgebraic TermsClass 10 MathematicsAp BasicsIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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