Question

100. A coin is tossed five times. What is
the probability of getting the
sequence HTTHT?
A 1/32
B. 1/2
C. 1/16
D. 1/64​

Answer 1

Step-by-step explanation:

Coin is tossed 5 times 

No of possible outcomes is 25=32

1)Getting atleast 4 heads is combination of getting 4 and 5 heads

No of ways for getting 4 heads is 5

No of ways for getting 5 heads is 1 

Probability of getting at least 4 heads is 325+1=163

2)Getting utmost 4 heads is total minus getting 5 heads

No of ways for getting 5 heads is 1 

Probability of getting 5 heads is 321

Probability of getting utmost 4 heads is 1−Probability of getting 5 heads =1−321=3231