+0  
 
0
384
3
avatar

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

 Sep 13, 2021
 #1
avatar
0

The probability of getting 3 heads in a row is:

 

1/2 x 1/2 x 1/2 ==1 / 8

 Sep 13, 2021
 #2
avatar+241 
+1

This graph might help explain:

 Sep 13, 2021
 #3
avatar+37159 
+1

There are   24 = 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

 Sep 13, 2021

4 Online Users

avatar