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What is the next term in (1,3,6,10,\ldots)?

Answer and explanation

Correct answer: 15

Look at the differences between consecutive terms: \(3-1=2\), \(6-3=3\), and \(10-6=4\). The difference increases by 1 each time, so the next difference is \(5\). Therefore, the next term is \(10+5=15\). Choosing 14 would incorrectly keep the next difference as 4. Exam tip: For number sequences, first write the consecutive differences and identify their pattern.

Related tags

SequencesNumber PatternsTriangular NumbersConsecutive DifferencesNext TermSequences And ProgressionsMathematicsClass 9 Mcq

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