Mathematics for IGCSE & O level - Sequences (Section 2 - No. 26)
Find the general formula for the nth term of the sequence 2, 7, 12, 17, ...
5n - 3
2n + 5
7n - 5
3n + 5
Spiegazione
The sequence increases by 5 each time. When n=1, the answer is 2, so 5n - 3=2