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What is the next term of (243,81,27,9,\ldots)?

Answer and explanation

Correct answer: 3

In this sequence, each term is obtained by dividing the preceding term by 3: \(243\div3=81\), \(81\div3=27\), and \(27\div3=9\). Therefore, the next term is \(9\div3=3\). Although 6 is obtained by subtracting 3 from 9, it does not follow the division rule of the sequence. Exam tip: First check for a multiplication or division relationship between consecutive terms.

Related tags

SequencesGeometric SequenceDivision PatternNext TermNumber PatternsSequences And ProgressionsMathematicsClass 9 Mcq

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