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Class 9 Mathematics Sequences and Progressions nth termHard

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In an arithmetic sequence, the first term is (17) and the (n)th term is (5n+12). What is the common difference?

Answer and explanation

Correct answer: (5)

In (a_n=5n+12), the coefficient of (n) is (5), so the common difference is (5). In a linear (n)th term, the coefficient of (n) gives the difference.

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Sequences Progressions Nth-Term Common-Difference Nth Term Sequences And Progressions Mathematics Class 9 Mcq

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