In a random experiment, a symmetric coin is thrown three times. Find the probability that the eagle will fall exactly once

Solution: What are the possible outcomes of three coin flips?
1) Tails, tails, tails.
2) Tails, tails, heads.
3) Tails, heads, tails.
4) Eagle, tails, tails.
5) Tails, eagle, eagle.
6) Eagle, tails, eagle.
7) Eagle, eagle, tails.
8) Eagle, eagle, eagle.
These are all possible events, there are no others. We are interested in the probability of 2nd, 3rd, 4th events.
Total possible outcomes 8.
Favorable outcomes – 3.
3/8 ratio = 0.375

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