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, ...
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- 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
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- Select the expression that represents 4 more than .
- ✓
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- 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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