Question: how many combinations of numbers are there for powerball?
Answer: If you do the math, there are 11,238,513 possible combinations of five white balls (without order mattering). Multiply that by the 26 possible red balls, and you get 292,201,338 possible Powerball number combinations. At $2 per ticket, you'd need $584,402,676 to buy every single combination and guarantee a win.