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In the AP (64,57,50,\ldots), which is the last term greater than (-20)?

Answer and explanation

Correct answer: (-13)

The first term is 64 and the common difference is \(d=57-64=-7\). Thus, each successive term decreases by 7: \(1,-6,-13,-20\). Here, \((-13)\) is greater than \((-20)\), while the next term is \((-20)\), which is not greater than itself. Therefore, the answer is \((-13)\). Exam tip: For “greater than”, do not include the boundary value itself.

Related tags

Arithmetic ProgressionNth TermCommon DifferenceDecreasing ApInequalitiesFinding The $N$Th Term Of An ApFinding The N Th Term Of An ApArithmetic Progressions (Ap)

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