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Class 10 Mathematics Arithmetic Progressions (AP)Introduction to APs and common difference.Expert

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For which (r) will (9, 9+r, 9+4r, 9+9r,\ldots) be an arithmetic progression?

Answer and explanation

Correct answer: Only (r=0)

The consecutive differences are (r,3r,5r), which are equal only when (r=0). In such questions it is necessary to write all consecutive differences.

Related tags

Ap Condition For Ap Algebraic Sequence Expert Introduction To Aps And Common Difference.Introduction To Aps And Common Difference Arithmetic Progressions (Ap)Arithmetic Progressions Ap

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