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Class 9 Mathematics Sequences and Progressions Explicit or general ruleExpert

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In the sequence (70,61,52,43,\ldots), which term is (-2)?

Answer and explanation

Correct answer: (9)th

The general term is (a_n=79-9n), and (79-9n=-2) gives (n=9). Even in decreasing sequences the position is natural.

Related tags

Sequences Progressions Decreasing-Sequence Term-Position Explicit Or General Rule Sequences And Progressions Mathematics Class 9 Mcq

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