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If an arithmetic progression has (a=10) and (d=-1), what are the first four terms?

Answer and explanation

Correct answer: (10, 9, 8, 7)

The first term is 10, and each subsequent term is obtained by adding d=-1 to the previous term. Thus, the terms are 10, 10-1=9, 9-1=8, and 8-1=7. Option B uses a common difference of +1, while option D uses -2. Exam tip: a negative common difference produces decreasing terms.

Related tags

Arithmetic ProgressionFirst Four TermsCommon DifferenceNegative DifferenceIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions Ap

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