If the number of heads obtained is denoted by x when two unbliased coins are tossed then find the mean value of X .

If the number of heads obtained is denoted by X when two unbiased coins are tossed then find the mean value of X.

Let X represent the difference between the number of heads and the number of tails obtained when an unbiased coin is tossed 7 times. Then, the possible values of X are -

Let x denote the number of heads when 10 unbiased coins are tossed find the probability distribution of x

A certain coin is tossed with probability of showing head being 'p' . Let 'q' denotes the probability that when the coin is tossed four times the number of heads obtained is even. Then (a) there is no value of p , if q=(1)/(4) (b) there is exactly two value of p , if q=(3)/(4) (c) there are exactly three value of p , if q=(3)/(5) (d) there are exactly four value of p , if q=(4)/(5)

Let x denote the number of tails preceding the first head when an unbiased coin is tossed repeatedly find the probability distribution of x

A unbiased coin tossed three times. Find the probability of getting 1 head

Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X?

Two coin (a one rupee coin and a two rupee coin) are tossed once. Find a sample space.

If four unbiased coins are tossed, find the probability that there should be two talls.

There are three coins. One is two headed coin, another is a biased coin that comes up head 75% of the time and third is an unbiased coin. One of the three coins is chosen at random and tossed. If it shows head, what is the probability that it was the two headed coin ?