If you had a fair coin, that is one that flips heads and tails evenly, and flipped it 20 times in a row, the odds that all twenty of those flips will be heads is about \(1 \text{ in a } 1,000,000\).

If you kept flipping and kept turning up heads, how muchâ€‹ more flips of heads would you have to get to for the odds to be at least \(1 \text{ in a } 1,000,000,000\)?

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