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What is the common difference in (-3,1,5,9,\ldots)?

Answer and explanation

Correct answer: 4

The common difference is the difference between two consecutive terms. Here, \(d=a_2-a_1=1-(-3)=4\); the other consecutive differences are also \(5-1=4\) and \(9-5=4\). Therefore, the correct answer is 4. The value 5 is a term, not the difference between consecutive terms. Exam tip: subtract any two consecutive terms to verify the common difference.

Related tags

Arithmetic-ProgressionsCommon-DifferenceClass-10Introduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics

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