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Mathematics for IGCSE & O level - Sequences (Section 2 - No. 50)
What is the next term in the sequence: -2, 1, 6, 13,...?
20
22
24
26
Forklaring
The differences are 3, 5, 7, thus the next difference should be 9. The next term is 13 + 9 = 22.
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