According to the regulations, as long as the events were of at least 20 players each you should be good. Though, I'm not extremely familiar with the rules for so I could be wrong.
http://www.fide.com/fide/handbook.html?id=41&view=category (section 3.5)
@MC7206 I checked out your FIDE profile. You were an arbiter in 3 RAPID tournaments, which is different from being an arbiter in a classical tournament. According to FIDE handbook, in a rapid tournament you need to have minimum thirty (30) players and nine (9) rounds. So, you should check out the same link that was given by @Martin_Stahl but section 3.8 for Rapid and Blitz tournaments. Btw, i think it can be approved. Best of luck!
question. i had 3 fide tournament as an arbiter and i also passed the fide seminar but the problem was those 3 tournaments i had are all swiss system tournament. do you think it will be approve? my fide id is 5219264. thanks