You toss a fair coin repeatedly until you get 4 consecutive heads. what is the expected number of coin tosses?

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asked Jun 18, 2019 22.0k views

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Tasfia · Answer 1 · 2019-06-22T04:03:30+0000

Chance of getting 4 heads in a row is (1/2)^4=1/16. So it should take 16 tries to likely get 4 heads in a row. Now to find amount of coin tosses it would be 16 x 4 = 64 coin tosses.

You toss a fair coin repeatedly until you get 4 consecutive heads. what is the expected number of coin tosses?

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