50 of them.
The amount of cards needed to make a 20 story house of cards will vary depending on how big the diameter is. Hundreds of cards are probably needed.
There are 20 such cards.
20 yellow cards
up to 20 and the rest are magic and trap cards
20
You start backwards, you know you have 80 baseball so that makes 40 football. 20 basketball, and 40 hockey.
Exactly around 10-20 depending what fleer basketball cards you are talking about
20 of them.
A 16x20 poster is 16 inches wide and 20 inches tall.
You get 20 cards, 2 badges and 6 stickers!
Either 8 or 15 cards.
well, if you are making a deck you should have:60 cards at the most 3 or 2 of the Pokemon can be the same if you want to have a good pile just do 20 of each like 20 Pokemon 20 trainer cards 20 energy cards...