Lottery mathematics a game is Mega Millions, albeit with different jackpot odds. Where more than 1 powerball is drawn from a separate pool of balls to the main lottery (for example, in the EuroMillions game), the odds of the different possible powerball matching scores are calculated using the method shown in the "other scores" section above (in other words, the powerballs are like a mini-lottery in their own right), and then multiplied by the odds of achieving the required main-lottery score. If the powerball is drawn from the "same" pool of numbers as the main lottery, then, for a given target score,
National Lottery (United Kingdom) numbers. The players who match all six drawn numbers win equal shares of the jackpot; the chance of doing so is 1 in 45,057,474. Similarly, if four or five balls are matched, the relevant prize is divided equally between all who match that many balls. If no player matches all six numbers, the jackpot is added to that of the next Lotto draw—a "rollover". This accumulation was limited to three consecutive draws until 10 February 2011, when it was increased to four. Rollovers are frequent, with for example 20 Wednesday (39%) and 13 Saturday rollovers (25%) in 2011 (fewer tickets