Find the probability distribution of the number of doublets in four throws of a pair of dice.

Finci the probability distribution of the number of doublets in four throws of a pair die.

Find the probability distribution of the number of loublets in four throws of a pair of dice. Also find the mean and variance of this distribution.

Find the mean of the probability distribution of the number of doublets in three throws of a pair of dice.

Find the probability distribution of number of doublets in four throws of a pair of dice. Find also the mean and the variance of the number of doublets.

Find the probability distribution of the number of doublets in 4 throws of a pair of dice. Also, find the mean and variance of this distribution.

If pair of dice is thrown 4 xx.If getting a doublet is considered a success,find the probability distribution of the number of doublets in three throws of a pair of dice and hence find its mean.

Find the probability distribution of the number of doubles in 4 throws of a pair of dice.Also find the mean and variance of this distribution.