Find the probability distribution of the number of heads when three coins are tossed.

Find the probability distribution of the number of sixes in three tosses of a die.

Find the probability distribution of X ; the number of heads in two tosses of a coin ( or a simultaneous toss of two coins).

Find the probability distribution for number of heads obtained in three tosses of a coin.

Find the probability distribution of (i) number of heads in two tosses of a coin. (ii) number of tails in the simultaneous tosses of three coins. (iii) number of heads in four tosses of a coin.

Find the probability distribution for number of heads obtained in two tosses of a coin.

A man wins a rupee for head and loses a rupee for tail when coin is tossed. Suppose that he tosses once and quits if he wins but tries once more if he loses on the first toss. Find the probability distribution of the number of rupees the man wins.

Write probability distribution, when three coins are tossed.

A coin is tossed until a head appears or the tail appears 4 times in succession. Find the probability distribution of the number of tosses.

Find the mean number of heads in three tosses of a fair coin.

Find the mean number of heads in three tosses of a fair coin.