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What is the first term greater than (500) in the AP (17,27,37,\ldots)?

Answer and explanation

Correct answer: 507

Here, the first term is 17 and the common difference is 10. Thus, \(a_n=17+10(n-1)=10n+7\). From \(10n+7>500\), we get \(n>49.3\), so the least integer value of \(n\) is 50. Therefore, \(a_{50}=507\), which is the first term greater than 500. The close distractor 497 is the preceding term, since \(a_{49}=497\). Exam tip: For “greater than”, use the next integer value after solving the inequality.

Related tags

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

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