FIRST: Thanks for the advice on finding out how to ask my question. I revised my question, and here it is. I hope what I'm looking for is clearer.
I'm making a game and I need help figuring out the odds of something happening.
Every round is made up of 6 turns. (If four players are playing, there will be 24 turns in a round.)
The board is filled with colored squares. Each turn, you have a 20% chance of landing on a BLUE square, which means you will draw a blue card. There are 72 blue cards; 7 of those are "Level Up" cards. Drawn cards are discarded. Non-Level-Up cards are irrelevant to this.
If four players are playing, what are the odds that in a round, at least one player will level up? What if six players are playing?
I'm aware that the odds increase/decrease based on cards drawn, so I'm just looking for the base odds.