This "historically-based" system of picking numbers is gaining increasing popularity in the United States. It cannot guarantee a profit, however, and there is no mathematical basis for any claim that it increases your chance of winning. It is presented merely as a curiosity.
To use this gambling system, take three to five decks of cards or sets of slips of paper. They will represent the numbers which could be drawn in a given lottery. Some lotteries have 54 numbers, so in order to do this properly you should have jokers in the deck.
The slips of paper should be as close to the same size as possible for the best random selection. If your lottery does have 54 numbers, use the whole deck with jokers. If it has 53, remove one joker; both for 52; the king of diamonds for 51; the queen of diamonds for 50; and so on until you have the same number of cards in each deck as there are numbers to be drawn from.
Next, assign number to your cards and slips of paper. Write numbers corresponding to numbers to be drawn on three to five sets of slips of paper, or chart each card left in the deck with a number. Write the cart on a separate sheet of paper this way:
Ace of spades equals 2, deuce equals 3, up to king of spades which equals 13. The ace of clubs then equals 14, up to the king of clubs which is 26. The ace of hearts equals 27 up to the king which equals 39, and so on through the diamonds. The jokers, if necessary, will equals 53 and 54.
Find out the numbers drawn in the last five to twenty draws and keep them handy. Then remove slips of paper or playing cards corresponding to the numbers drawn. The number already drawn are not important; we want what's left after they have been removed. When you find a number that's been drawn twice in recent draws, take the corresponding card out of the second deck of cards or set of slips. Keep removing numbers until you run across one that you have already removed from the other decks.
You should have a relatively small number of cards left which will represent the numbers you will select from when you purchase your tickets.
Eventually you will have to go back to the oldest draw from which you removed cards or slips and place those numbers back in the pile in order to have a good selection.
What your are doing here is removing numbers which have been drawn in the past on the assumption that those numbers have less chance of being drawn in the future. In actual fact, you're not gaining a thing. The lottery corporation returns all numbers drawn into the bin or barrel so they can be drawn from on the next draw. In doing so they make sure that every number has an equal chance of being drawn in any given draw. Some may claim that since some balls drop more often than others, the opposite happens. Frequently drawn number, they say, stand a better chance of being drawn in the future, which is again not true.
The balls used in most lotteries are made to extremely close tolerances, and lottery gear is very expensive as a result. The firms who make this equipment take extreme care to make sure that just such a thing cannot and will not happen.
While it may be fun to experiment with numbers and formulas, they really can't be made to work. "Elimination-based" systems may be fun to play with, but they do nothing to increase your odds.