williams9 williams9

04-04-2017
Mathematics

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George flips a colored chip that is red on one side and black on the other a total of 20 times. What is the probability of the 21th flip resulting in landing on the black side up?

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SapphireMoon SapphireMoon

04-04-2017

1/2. Any time he flips the chip, is has a 50% chance of going either way, no matter what happened before.

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