A fair coin is tossed 4 times What is the probability of tos
     A fair coin is tossed 4 times.  What is the probability of tossing a head on the 4th toss, given that the preceding 3 tosses were tails?  What is the probability of getting either 4 heads or 4 tails?  What is the probability of tossing a head on the 4th toss, given that the preceding 3 tosses were tails?  ____ (Type an integer or a fraction. Simplify your answer.)  What is the probability of getting either 4 heads or 4 tails?  _____ (Type an integer or a fraction. Simplify your answer.) 
  
  Solution
total outcomes 2^4= 16
 A)Probability of TTTH = 1/16
 B) Probability of HHHH or TTTT = 2/16 = 1/8

