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

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For which (m) will (m+2, 2m+5, 4m+1) be in an arithmetic progression?

Answer and explanation

Correct answer: (4)

From (2(2m+5)=(m+2)+(4m+1)), (4m+10=5m+3), so (m=7). Use the twice-middle-term rule for three terms.

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Ap Find Parameter Algebraic Terms Hard Introduction To Aps And Common Difference.Introduction To Aps And Common Difference Arithmetic Progressions (Ap)Arithmetic Progressions Ap

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