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In the sequence (-5,-1,3,7,\ldots), what are (a) and (d) respectively?

Answer and explanation

Correct answer: \(a=-5,\ d=4\)

In an AP, \(a\) is the first term, so \(a=-5\). The common difference \(d\) is the difference between consecutive terms: \(d=-1-(-5)=4\). Hence, the correct pair is \(a=-5,\ d=4\). In option C, the common difference is correct, but the first term is not. Exam tip: To find \(d\), subtract the previous term from the next term.

Related tags

Arithmetic ProgressionFirst TermCommon DifferenceClass 10 MathematicsAp BasicsIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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