Mathematics for IGCSE & O level - Sequences (Section 3 - No. 46)
Which of these sequences is a geometric sequence?
2, 4, 6, 8,...
3, 6, 12, 24, ...
1, 4, 9, 16, ...
10, 7, 4, 1, ...
Explanation
A geometric sequence has a constant ratio between consecutive terms.
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