Write probability distribution, when three coins are tossed.

The probability distribution of x is

Find the probability distribution of number of heads in four tosses of a coin .

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

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

given is not a probability distribution why ?

Let p_n denote the probability of getting n heads, when a fair coins tossed m times. If p_4, p_5, p_6 are in AP then values of m can be

A box contains N coins, m of wiich are fair and the rest are biased. The probability of getting a head when a fair coin is tossed is 1/2, while it is 2/3 when a biased coin is tossed. A coin is drawn from the box at random and is tossed twice. The first time it shows head and the second time it shows tail. What is the probability that the coin drawn is fair ?

Find the probability distribution of number of tails in the simultaneous tosses of three coins .

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 of number of doublets in three throws of a pair of dice.