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In the sequence (-2,3,8,13,\ldots), what are (a) and (d) respectively?

Answer and explanation

Correct answer: \(a=-2,\ d=5\)

In an AP, \(a\) is the first term, so \(a=-2\). The common difference \(d\) is the difference between consecutive terms: \(d=3-(-2)=5\). Therefore, \(a=-2,\ d=5\) is correct. Option B incorrectly treats the second term, 3, as the first term. Exam tip: take extra care with signs when subtracting a negative number.

Related tags

Arithmetic ProgressionFirst TermCommon DifferenceIntegersClass 10 MathematicsIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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