Eli5: Why can’t you just double your losses every time you gamble on a thing with roughly 50% chance to make a profit

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This is probably really stupid but why cant I bet 100 on a close sports game game for example and if I lose bet 200 on the next one, it’s 50/50 so eventually I’ll win and make a profit

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16 Answers

Anonymous 0 Comments

It’s called martingale and it doesn’t work for 2 reasons:

1- casinos have minimum and maximum bet sizes that prevent you from doubling the bet forever.

2- 50% pretty much guarantees that you will eventually get both results but you can still get very long losing streaks and you would need a large enough bankroll to cover it. For a losing streak of 10 times you need to have more than 1000 times you bet size in the bank and you will run into a 10x losing streak before you win 1000 times.

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