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There are 210 total possible outcomes from flipping a coin 10 times.

There is one possible outcome where there are 0 heads.

There are 10 possible outcomes where there is 1 head.

So there are 210 - 11 possible outcomes with at least 2 heads.

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โˆ™ 2010-11-09 21:33:49
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Q: How many possible outcomes of tossing a coin 10 times have at least 2 heads?
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What is the probability to get tail at least once when 6 coins are tossed simultaneously?

Number of possible outcomes of one coin = 2Number of possible outcomes of six coins = 2 x 2 x 2 x 2 x 2 x 2 = 64Number of possible outcomes with six heads = 1Probability of six heads = 1/64Probability of not six heads = at least one tails = 63/64 = 98.4375%


What is the probability of exactly three heads in four flips of a coin given at least two are heads?

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