Spain Lottery Optimizer and Probability Calculator

It is the average value you expect to win for each euro wagered. In almost all lotteries, mathematical expectancy is negative (you typically lose €0.50 per €1 wagered), meaning in the long run, the house always wins.

If you want to win "something," diversifying numbers increases your probability of winning smaller prizes. If you want the jackpot, playing a single number gives you the same odds, but a higher prize if it hits.

From a purely mathematical perspective, no. Only 70% of funds are returned. However, it has much higher odds of winning something (1 in 100,000) compared to Euromillones (1 in 140 million).

No. Lottery draws are independent random processes. A number coming out yesterday has no influence on whether it comes out today. All numbers have exactly the same probability in each draw.

It's a relative measure of how hard it is to win the jackpot. Accessible (under 200k): more realistic odds. Difficult (under 20M): remote odds. Extreme (over 20M): virtually impossible.