Question

What kind of sequence is the pattern 1, 6, 7, 13, 20, ...?
arithmetic sequence
exponential sequence
geometric sequence
recursive sequence

Answer 1

I need to know what recursive means.

Answer 2

A recursive sequence is a sequence whose terms are obtained by doing some calculation with one or more previous terms.
Sometimes, to get a new term, you need to look at the previous term.
Other times to get a new term, you need to look at the two previous terms.