Sleeping Beauty problem

The problem is expressed as an experiment which Sleeping Beauty has agreed to take part in. On Sunday she will be given a sleeping drug. Then a fair coin will be tossed, which affects what happens in the rest of the experiment. During the experiment, she will be woken up either once (on Monday) or twice (on Monday and Tuesday), depending on the coin. If the coin comes up heads she will only be woken up once, if it is tails she will be woken up twice. Each time she is woken up she will be interviewed and then put back to sleep. Finally, on Wednesday, she will be woken up again and the experiment will be over. <a href="https://medium.com/recreational-maths/sleeping-beauty-problem-935a0c542552">Website</a>