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Which of the following number sequences is an arithmetic progression?

Answer and explanation

Correct answer: 3, 7, 11, 15, ...

In an arithmetic progression, the difference between consecutive terms remains constant. In option A, 7−3=4, 11−7=4, and 15−11=4, so it is an AP. Option B has a constant ratio of 2, not a constant difference. Exam tip: check at least two consecutive differences.

Related tags

Arithmetic ProgressionSequencesCommon DifferenceNumber PatternsClass 9 MathematicsSequences And ProgressionsMathematicsClass 9 Mcq

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