It doesn’t matter how many tickets are bought, as the odds are the same. You are drawing the odds from numbers drawn, not tickets sold.
The formula for determining the odds of winning, which I will use one of my national lotteries to explain it.
We have a lottery called 6/49. They draw 6 numbers and the numbers that can be drawn ranges from 1-49.
So, the math goes (49.48.47.46.45.44)/(1.2.3.4.5.6) to get about 1 in 13.98 million to win.
I got this information from a high school math textbook.
I wasn’t talking about the odds of winning the jackpot. I was guessing the odds of 435 million tickets being bought with the same numbers.... And one set of numbers out of 176 million or so combos. Out of say 200+ Million adults in the US over 18 say half buy lotto tickets.... Then roughly 100 Million people(or most ALL lottery players) would have to buy 4 lottery tickets each with the same numbers. I would guess the Odds of this situation happening would be High....