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Which arithmetic progression has first term (6) and common difference (4)?

Answer and explanation

Correct answer: (6,10,14,18,\ldots)

An arithmetic progression is a sequence in which the same number is added to obtain each next term. The first term is the term at the beginning, and the common difference is found by subtracting one term from the next. In option A, the sequence starts with 6 and continues as 10, 14, and 18. Each step adds 4, so it has first term 6 and common difference 4.

The other choices fail at least one condition. Option B starts with 4, not 6, although its difference is 4. Option C starts with 6, but its difference is 6 because 12-6=6. Option D has a difference of 4 but starts with 10. Thus only option A satisfies both requirements simultaneously. A quick check is \(10-6=4\), \(14-10=4\), and \(18-14=4\).

Related tags

SequencesProgressionsArithmetic-ProgressionClass-9Easy

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