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What is the next term in (160,79,38.5,18.25,\ldots) if the rule is divide the previous term by (2) and subtract (1)?

Answer and explanation

Correct answer: \(8.125\)

Using the rule, first divide the previous term \(18.25\) by \(2\), then subtract \(1\): \(18.25\div 2-1=9.125-1=8.125\). Therefore, the next term is \(8.125\). \(9.125\) is only the quotient before subtracting \(1\). Exam tip: In recursive sequences, follow the stated order of operations carefully.

Related tags

SequencesRecursive SequencesNumber PatternsOrder Of OperationsMathematics Grade 9Sequences And ProgressionsMathematicsClass 9 Mcq

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