can you mix yugioh gx cards with regular yugioh cards to make one deck?? !?

it cuz i building a deck to get in a competition i need to know if i can mix them?? i heard yugioh gx cards are ment to only be mixed with gx cards but im not sure please help me out!

Public Comments

1. I believe you can........Check the official website if you have any questions: www.yugioh.com please select me as best answer if i helped
2. Yes. Yugioh GX merely refers to cards based from the series GX. (All packs from the Lost Millennium pack to the current). There is no difference in the cards, so you can use cards from either eras with no problem.
3. yeah theres no problem with mixing the two.in fact i belive it makes the decks better.i use old school cards with new school cards.like monster reborn.i know its banned but i dont play tournys.i run a dino deck with a special monster.but im not reveling that card.
4. yes of course
5. yes elizabeth p.s. you dont have too but you can