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If (p,,p+7,,p+14,\ldots) is an arithmetic progression, what is the common difference?

Answer and explanation

Correct answer: (7)

In an arithmetic progression, the common difference is the fixed amount added to one term to obtain the next term. It can be found by subtracting any term from the term immediately after it. The letter p represents an algebraic value, but it cancels during subtraction, so the answer does not depend on the value of p.

Using the first two terms, the difference is \\( (p+7)-p=7 \\). The same result appears again because \\( (p+14)-(p+7)=7 \\). Thus every consecutive pair differs by 7, so the common difference is 7. Therefore, option B is correct. Option C is the increase from the first term to the third term, not the common difference between consecutive terms.

Related tags

SequencesProgressionsArithmetic-ProgressionClass-9EasyArithmetic ProgressionSequences And ProgressionsMathematics

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