Neither system has better odds. The odds of a lottery number repeating are the same as any other number, so no number "has it's time." Even though as the number of lotteries increases, the likelihood of any individual number coming up rises, this means nothing for each individual drawing. Think of it this way, if I'm rolling a dice and pick the number 6 every time for ten roles, then my odds are good. but if it gets to roll 10 without a 6 coming up, then I've only got a 1 / 6 chance. You'd be just as well picking randomly each time. And each time you would have a 1 / 6 chance because the past rolls have no influence on the odds for future rolls.