A biased coin is tossed repeatedly until a tail appears for the first time. The head is 3 times likely to appear as the tail. The probability that the number of tosses required will be more than 4, given that in first two toss no tail has occur, is

A biased coin is tossed repeatedly until a tail appears for the first time. Heads is 3 times as likely to appear as tails. Let x be the number of tosses required. Assume that all the trials of tossing a biased coin are independent. Then, the conditional probability that xge6 , gives that x gt3 , is equal to

A coin is tossed repeatedly until a tail comes up for the first time. Write the sample space for this experiment.

A coin is tossed repeatedly until a tail comes up for the first time.Write the sample space for this experiment.

A balanced coin is tossed repeatedly until a tail appears if x denotes the number of heads preceding the first tail find the probability distribution of x

A fair coin is tossed repeatedly. If tails appear on first four tosses, what is the probability of head appearing on the fifth toss ?

A coin is tossed until a head appears or it has been tossed 3 times. Given that head doesn't appear on the first toss, the probability that coin is tossed 3 times is

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

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