Mathematics for IGCSE & O level - Sequences (Section 3 - No. 35)
What is the general term of the sequence 2, 9, 16, 23, ...?
7n - 5
7n + 2
2n + 7
n + 7
Vysvětlení
The sequence increases by 7 each time, and when n=1 the value is 2, therefore, the formula is 7n-5