Question

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

• A. $\frac{1}{2}$
• B. $\frac{1}{7}$
• C. $\frac{3}{7}$
• D. $\frac{2}{3}$

Answer 1

Answer: (A)

$\frac{1}{2}$

Answer 2

Probability of head $=\frac{1}{2}$
Because coin have only two chances tails or head.
And the statement that tails come 4 times will not affect the fifth toss.
So the probability of getting head =$$\frac{1}{2}.So the correct option is (A)