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

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If (9, y, 2y+6) are in an arithmetic progression, what is the common difference?

Answer and explanation

Correct answer: (15)

From (2y=9+(2y+6)), we get (0=15), so it never forms an arithmetic progression. None of the listed values can be its common difference.

Related tags

Arithmetic Progression Common Difference Class 10 Introduction To Aps And Common Difference.Introduction To Aps And Common Difference Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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