A fair coin is tossed 20 times. The probability of getting the three or more heads in a row is 0.7870 and the probability of getting three or more heads in a row or three or more tails in a row is 0.9791.2 What is the probability of getting three or more heads in a row and three or more tails in a row?

The  value is  

Step-by-step explanation:

From the question we are told that

   The  number of times  is  n  =  20  

   The probability of getting three or more heads in a row is  

   The probability of getting three or more heads in a row or three or more tails in a row is    

Generally given that it is a fair coin , then  

Here  P(T) is  probability of getting three or more tails  in a row

Generally  the probability of getting three or more heads in a row and three or more tails in a row is mathematically represented as

=>  

=>  

b

step-by-step explanation:

b

d. vertex

step-by-step explanation: