Question

A fair coin is tossed repeatedly. If tail appears on first four tosses then find the probability of head appearing on fifth toss

• A. $\frac{1}{2}$
• B. $\frac{1}{4}$
• C. $\frac{3}{4}$
• D. $\frac{2}{3}$

Answer 1

The correct option is A $\frac{1}{2}$

Since the trials are independent, so probability that head appears on the fifth toss does not depend upon previous results of the tosses. Hence, required probability is equal to probability of getting head, i.e., $\frac{1}{2}$.