Student: A fair is coin is tossed repeatedly. If head appears on first four tosses then what is the probability of appearance of tail in the fifth toss?
Options:
(A) 2/3
(B) 1/2
(C) 1/8
(D) 1/0
(E) 1/6.
Another student: Let's say, hmmm...
As the given coin is a fair coin, the probability of getting tail on the fifth toss is independent of the out comes in the previous 4 tosses. So probability = 1/2 Final answer: (B).