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What is the first term greater than (300) in the AP (11,19,27,\ldots)?

Answer and explanation

Correct answer: 307

Here, the first term is 11 and the common difference is 8. Thus, \(a_n=11+8(n-1)=8n+3\). From \(8n+3>300\), we get \(n>37.125\), so the smallest possible integer is \(n=38\). Hence, \(a_{38}=307\) is the first term greater than 300. Although 299 is the nearest preceding term, it is not greater than 300. Exam tip: for “greater than” conditions, take the next valid integer value of \(n\).

Related tags

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

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