Mathematics for IGCSE & O level - Sequences (Section 2 - No. 1)
What is the term-to-term rule for the sequence: 2, 5, 10, 17, 26, ...?
+2
add consecutive odd numbers starting from 3
Add 3
Add 1
説明
The differences between the terms increase consecutively by 3, then 5, 7, and 9.