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

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A finite AP (a,a+d,a+2d,a+3d) is reversed as (a+3d,a+2d,a+d,a). What is the common difference of the new order?

Answer and explanation

Correct answer: (-d)

In the reversed order, each step subtracts (d), so the new difference is (-d). In exams, reversing the order can change the sign of the difference.

Related tags

Ap Reversed Ap Common Difference Introduction To Aps And Common Difference.Introduction To Aps And Common Difference Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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