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Extrapolating a sequence

Quiz by Oak National Academy: KS3 Maths (2)

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6 questions
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  • Q1
    Which of these are triangular numbers?
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    30s
  • Q2
    Which of these are prime numbers?
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    30s
  • Q3
    7, 8, 15, 23, 38 ... are the first five terms of a sequence. Which of these could be a rule for the sequence?
    Multiply the previous term by 2 and subtract 1 to get the next term.
    Add the two previous terms to get the next term.
    Multiply the two previous terms to get the next term.
    Add 1, add 3, add 5 and so on, differences increasing by 2 each time.
    Add 1, add 7, add 13 and so on, differences increasing by 6 each time.
    30s
  • Q4
    A linear sequence starts -4, 6, ... . The next term is ______.
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    30s
  • Q5
    A geometric sequence starts -4, 6, ... . What is the next term?
    12
    4
    -12
    -9
    9
    30s
  • Q6
    Which of these could be the first 5 terms in a sequence with a common second difference?
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    30s

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