Does buying more tickets actually improve your odds?
Yes — mathematically, this is one of the few lottery beliefs that's actually true, with an important caveat about scale. If a single EuroMillions ticket gives you a 1 in 139,838,160 chance, buying 2 different tickets for the same draw genuinely gives you roughly double that chance — about 1 in 69,919,080.
The reason this works is simple: each ticket is one shot at the winning combination out of the same fixed pool, and each additional distinct combination you hold adds one more chance, with no penalty. It's straightforward addition, not some kind of averaging that cancels out.
The catch is scale. Doubling an astronomically small number still leaves you with an astronomically small number. Going from 1-in-139,838,160 to 1-in-69,919,080 is a real, measurable improvement — and also still means you'd expect to lose that particular draw essentially every time. This is exactly why MyDrawDay's odds calculator lets you slide the ticket count and watch the number move in real time — it's real, it's just proportionally tiny at these pool sizes.