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What is the common difference of the arithmetic progression \((3m,\; 3m-6,\; 3m-12,\; \ldots)\)?

Answer and explanation

Correct answer: (-6)

For an A.P., the common difference \(d\) is the constant value of \(\text{next term} - \text{previous term}\). Using the first two terms: \[d=(3m-6)-(3m)=-6.\] The \(3m\) cancels, leaving a constant difference \(-6\). Therefore option B is correct.

Related tags

Arithmetic-ProgressionCommon-DifferenceAlgebraic-ApGrade10

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