There are 292 million combinations. With the jackpot at $1.3 billion, you may start asking yourself why not just buy one of every combination, at $2 per ticket, for $584 million, and win the prize. Even though no one won last time, the odds of having a solo winning ticket are about 22%. The big thing though is you have to buy tickets in person (even though some people on here state they are buying online). If you bought one ticket every second, it would take more than nine years to buy all the tickets.
Lots of other fun stuff in the article here:
http://money.cnn.com/2016/01/11/news...win-guarantee/