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What is the (50)th term of the AP (4,4,4,4,\ldots)?

Answer and explanation

Correct answer: 4

The first term of this AP is 4 and the common difference is 0, since \(4-4=0\) for consecutive terms. Using \(a_n=a+(n-1)d\), \(a_{50}=4+49\times0=4\). Choosing 50 confuses the term number with the value of the term. Exam tip: find the common difference first; if \(d=0\), every term equals the first term.

Related tags

Arithmetic ProgressionNth TermCommon DifferenceConstant SequenceClass 10Finding The $N$Th Term Of An ApFinding The N Th Term Of An ApArithmetic Progressions (Ap)

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