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Sagot :
Answer:
If you flip a coin 3 times, the probability of getting at least 2 heads is 3/7
Explanation:
If you have a fair coin, and flip it three times, there are 8 possible outcomes:
HHH
HHT
HTH
HTT
THH
THT
TTH
TTT
The formulation of the question is a bit weird, but it seems to be meant as “at least one of the tosses was tails”. That means that, of the above table, we can dismiss the first row. Since all other outcomes are equally likely, each has a probability of 1/7 . There are 3 outcomes that have 1 tails and 2 heads. So our probability is 3×1/7=3/7 .
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