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If you mean 'at least' 2 heads, the probability is 50%. If you mean exactly 2,

the probability is 3/8, or 37.5%.

There are 3 independent coin tosses, each of which is equally likely to come up

heads or tails. That's a total of 2 * 2 * 2 or 8 possible outcomes (HHH, HHT, HTH,

etc.). Of these, 4 include 2 or 3 heads, which is half of 8. Only 3 include exactly 2

heads, so the probability of that is 3/8.

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Q: What is the probability of getting 2 heads when you toss three coins?
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