A fair coin is flipped three time . There are 8 possible outcome , and of them is equally likey. For each outcome, we can count the number of heads and the number of swttches ( i.e.., HT or TH subsequences
A fair coin is flipped three time . There are 8 possible outcome , and of them is equally likey. For each outcome, we can count the number of heads and the number of swttches ( i.e.., HT or TH subsequences