If you want to play keno then it is not tough for you to understand this game rules and regulations along with its playing structure. Learnings of keno required a little time to get understand.
First of all you need to get keno card or ticket.You will notice all numbers from 1 to 80 on this card. On the upper side of the card you will find the numbers ranging from 1 to 40 and the remaining numbers you will get on the lower part of the card.
Before the initiation of this game you need to pick those numbers which you think that they can win, just mark these numbers on the card given to you. Now you can choose any amount of numbers you wish to, but it should not be less than 20 and at least one number should be there.
At the starting of the game, 20numbers in random manner will be select. When this task complete the keno game is over and you will get the money depends upon the numbers you have got.
For example if you play with 10 numbers, but you got only 8, then you will get money according to this. If you get all 10 numbers  then definitely payout will be higher.
Payout ratio is always vary according to the casino. Most of the time payout remains high., this happens only due to the high house edge. Keno is one of the game which offered highest house edge. If you play with two numbers then you odds of winning is about 6 percent.