Starter quiz

  • Which of these could be the first four terms in an arithmetic sequence?
    • 11, 8, 5, 2, ...  ✓
    • -7, -1, 1, 7, ...
    • 27, 33, 39, 46, ...
    • 118, 120, 122, 124, ...  ✓
    • 5, 10, 20, 40, ...
  • 6, 30, 150, 750, ... are the first four terms in a geometric sequence with common ratio ______.
    • '5' ✓
  • 36, 49, 64, 81, ... are the first four terms in a sequence of square numbers. The next term is ______.
    • '100' ✓
  • Which of these are triangular numbers?
    • 1  ✓
    • 3  ✓
    • 6  ✓
    • 9
    • 12
  • Select the expression that represents 4 more than a + 4.
    • a + 8  ✓
    • a + 4 + a + 4
    • 4(a +4)
    • 4a + 4
    • 4a + 8
  • Which of these could be the first four terms in a geometric sequence?
    • -1, 2, -10, 20, ...
    • 2, -4, 8, -16, ...  ✓
    • 3, 5, 8, 12, ...
    • 5, 10, 15, 20, ...
    • 10, 30, 90, 270, ...  ✓
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