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The general term of an AP is (a_n=7n+2). Find the (11)th term.

Answer and explanation

Correct answer: 79

Given \(a_n=7n+2\), substitute \(n=11\) to get \(a_{11}=7\times11+2=77+2=79\). Therefore, 79 is correct. The close distractor 77 results from forgetting to add \(+2\). In exams, substitute the term number carefully for \(n\).

Related tags

Arithmetic ProgressionNth TermGeneral TermSubstitutionClass 10 MathematicsFinding The $N$Th Term Of An ApFinding The N Th Term Of An ApArithmetic Progressions (Ap)

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