Alex flips a fair coin four times. What is the probability that he flips heads three times in a row?

Guest Sep 13, 2021

#3**+1 **

There are 2^{4} = 16 possible outcomes

there are only 2 ways to get 3 heads in a row: t h h h and h h h t

2/16 = 1/8 as posted

ElectricPavlov Sep 13, 2021