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Class 9 Mathematics Sequences and Progressions nth termHard

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What is the (n)th term of the sequence (10,7,4,1,-2,\ldots)?

Answer and explanation

Correct answer: (13-3n)

The first term is (10) and the difference is (-3), so (a_n=10+(n-1)(-3)=13-3n). A decreasing sequence has a negative difference.

Related tags

Sequences Progressions Nth-Term Arithmetic Nth Term Sequences And Progressions Mathematics Class 9 Mcq

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