Find the mean and variance of the number of tails when three coins are tossed simultaneously.

Find the mean and variance of the number of heads when two coins are tossed simultaneously.

Find the mean and variance of the number of tails on the throw of three coins.

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

Find the mean and variance of the number of heads in the two tosses of a coin.

Find the mean and variance of the number of heads in the two tosses of a coin.

Find the mean and variance of the number of heads in the two tosses of a coin.

The expected value of the number of heads obtained when three coins are tossed simultaneously is .....

(a) (i) Find the probability distribution of the number of heads when three coins are tossed simultaneously. (ii) Find the probability distribution of the number of tails in the simultaneous tosses of three coins. (iii) Find the probability distribution of the number of heads in the simultaneous toss of four coins. (b) (i) Find the probability distribution of the number of heads in three tosses of a coin. (ii) Find the probability distribution of the number of sixes in two tosses of a die. ( c ) Find the probability distribution of the number of heads (tails) in four tosses of a coin.

Find the probability distribution of the number of tails when two coins are tossed.

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