If you buy a lotterie ticket that has a 1:100000 chances to win you have a 1:1000000 chance. If you buy two tickets, you have 2:1000000 or 1:500000 chance. Why can I eliminate 500.000 tickets with just one more ticket?
What am I conflating here?
Edit: Thank you guys, this was always something I started wondering about.
In: 0
You don’t “eliminate” anything.
1:100000 just means there’s 100000 possible outcomes (tickets to be drawn), and one of them (the one ticket you own) results in you winning. When you buy a 2nd one, there’s still 100000 possible tickets to be drawn, but two of them would result in you winning.
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