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

The Correct Option is A

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)