There is no one definitive answer to this question as the slots in Pokemon Yellow can be a bit randomized each time the game is played. However, there are a few general tips that can help players get the best outcomes when it comes to slots.
First, make sure that you have enough money saved up in order to buy all of the slots tickets that you need. This will help ensure that you are able tocatch as many wild Pokemon as possible.
Second, try to select a Pokemon that you are likely to encounter in the wild. This will help ensure that you have a better chance of getting a desirable Pokemon when you slot it into your party.
Finally, always keep an eye on the prize wheel as it can occasionally award players with rare items or even new Pokémon cards.