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Which sequence has common difference (-2)?

Answer and explanation

Correct answer: (10, 8, 6, 4)

In the sequence (10, 8, 6, 4), 2 is subtracted to get each next term: 8 - 10 = -2, 6 - 8 = -2, and 4 - 6 = -2. Hence, its common difference is -2. Options A and C have positive common differences, while option D has common difference 0. Exam tip: Find the common difference by calculating next term − previous term.

Related tags

Arithmetic ProgressionCommon DifferenceSequencesClass 9 MathematicsIntegersSequences And ProgressionsMathematicsClass 9 Mcq

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