The coin is thrown 100 times. What is the probability that the coat of arms will open exactly 45 times?

1). Tails and coat of arms are two possible outcomes of the test.
The coat of arms will drop out in one of two cases. They say that the probability of a coin falling with a coat of arms is ½ that is, it will be 0.5;
According to the problem, we said that a coin is thrown 100 times, so it turns out that the coat of arms can be caught with a probability of 0.5
50: 100 = 0.5;
2). But we need to find the probability that the coat of arms will appear 45 times for this we need:
45: 100 = 0.45;
Answer: 0.45 is the probability that the coat of arms will fall out of one hundred possible coin tosses.