Help please and thank you I appreciate it (Algebra 1)

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2

Can someone me out here and the tell me the greatest common factor

Can you divide 25 into 4 equal groups? explain why or why not.