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

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If (12, 12+r, 12+3r, 12+6r,\ldots) is an arithmetic progression, what should be the value of (r)?

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The consecutive differences are (r,2r,3r), which are equal only when (r=0). In such questions first write all consecutive differences.

Related tags

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

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